Finding the Fourth Proportional to 1,124.85, 1,686.06 and 714.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,124.85 : 1,686.06 = 714.18 : x
2. Step 2: Convert to fraction form
   1,124.85/1,686.06 = 714.18/x
3. Step 3: Cross multiply
   1,124.85x = 1,686.06 × 714.18
4. Step 4: Simplify right side
   1,124.85x = 1,204,150.33
5. Step 5: Solve for x
   x = 1,204,150.33/1,124.85
6. Step 6: Final answer
   x = 1,070.50