Finding the Fourth Proportional to 1,155.31, 1,594.31 and 707.03

Step by Step Solution

1. Step 1: Write the proportion equation
   1,155.31 : 1,594.31 = 707.03 : x
2. Step 2: Convert to fraction form
   1,155.31/1,594.31 = 707.03/x
3. Step 3: Cross multiply
   1,155.31x = 1,594.31 × 707.03
4. Step 4: Simplify right side
   1,155.31x = 1,127,221.46
5. Step 5: Solve for x
   x = 1,127,221.46/1,155.31
6. Step 6: Final answer
   x = 975.68