Finding the Fourth Proportional to 1,053.55, 1,580.59 and 476.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,053.55 : 1,580.59 = 476.27 : x
2. Step 2: Convert to fraction form
   1,053.55/1,580.59 = 476.27/x
3. Step 3: Cross multiply
   1,053.55x = 1,580.59 × 476.27
4. Step 4: Simplify right side
   1,053.55x = 752,785.22
5. Step 5: Solve for x
   x = 752,785.22/1,053.55
6. Step 6: Final answer
   x = 714.52