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Finding the Fourth Proportional to 2,972.58, 4,458.84 and 1,240.80

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Solution

The fourth proportional to 2,972.58, 4,458.84 and 1,240.80 is: 1,861.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,972.58 : 4,458.84 = 1,240.80 : x
  2. Step 2: Convert to fraction form
    2,972.58/4,458.84 = 1,240.80/x
  3. Step 3: Cross multiply
    2,972.58x = 4,458.84 × 1,240.80
  4. Step 4: Simplify right side
    2,972.58x = 5,532,528.67
  5. Step 5: Solve for x
    x = 5,532,528.67/2,972.58
  6. Step 6: Final answer
    x = 1,861.19

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