Finding the Fourth Proportional to 1,010.13, 1,394.72 and 656.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,010.13 : 1,394.72 = 656.57 : x
2. Step 2: Convert to fraction form
   1,010.13/1,394.72 = 656.57/x
3. Step 3: Cross multiply
   1,010.13x = 1,394.72 × 656.57
4. Step 4: Simplify right side
   1,010.13x = 915,731.31
5. Step 5: Solve for x
   x = 915,731.31/1,010.13
6. Step 6: Final answer
   x = 906.55