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Finding the Fourth Proportional to 2,756.53, 4,134.85 and 808.79

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Solution

The fourth proportional to 2,756.53, 4,134.85 and 808.79 is: 1,213.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,756.53 : 4,134.85 = 808.79 : x
  2. Step 2: Convert to fraction form
    2,756.53/4,134.85 = 808.79/x
  3. Step 3: Cross multiply
    2,756.53x = 4,134.85 × 808.79
  4. Step 4: Simplify right side
    2,756.53x = 3,344,202.64
  5. Step 5: Solve for x
    x = 3,344,202.64/2,756.53
  6. Step 6: Final answer
    x = 1,213.19

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