Finding the Fourth Proportional to 1,562.71, 2,156.51 and 854.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,562.71 : 2,156.51 = 854.55 : x
2. Step 2: Convert to fraction form
   1,562.71/2,156.51 = 854.55/x
3. Step 3: Cross multiply
   1,562.71x = 2,156.51 × 854.55
4. Step 4: Simplify right side
   1,562.71x = 1,842,845.62
5. Step 5: Solve for x
   x = 1,842,845.62/1,562.71
6. Step 6: Final answer
   x = 1,179.26