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Finding the Fourth Proportional to 2,620.28, 3,931.80 and 1,160.44

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Solution

The fourth proportional to 2,620.28, 3,931.80 and 1,160.44 is: 1,741.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,620.28 : 3,931.80 = 1,160.44 : x
  2. Step 2: Convert to fraction form
    2,620.28/3,931.80 = 1,160.44/x
  3. Step 3: Cross multiply
    2,620.28x = 3,931.80 × 1,160.44
  4. Step 4: Simplify right side
    2,620.28x = 4,562,617.99
  5. Step 5: Solve for x
    x = 4,562,617.99/2,620.28
  6. Step 6: Final answer
    x = 1,741.27

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