Finding the Fourth Proportional to 1,100.39, 1,517.69 and 707.45

Step by Step Solution

1. Step 1: Write the proportion equation
   1,100.39 : 1,517.69 = 707.45 : x
2. Step 2: Convert to fraction form
   1,100.39/1,517.69 = 707.45/x
3. Step 3: Cross multiply
   1,100.39x = 1,517.69 × 707.45
4. Step 4: Simplify right side
   1,100.39x = 1,073,686.25
5. Step 5: Solve for x
   x = 1,073,686.25/1,100.39
6. Step 6: Final answer
   x = 975.73