Finding the Fourth Proportional to 1,200.15, 1,656.59 and 702.99

Step by Step Solution

1. Step 1: Write the proportion equation
   1,200.15 : 1,656.59 = 702.99 : x
2. Step 2: Convert to fraction form
   1,200.15/1,656.59 = 702.99/x
3. Step 3: Cross multiply
   1,200.15x = 1,656.59 × 702.99
4. Step 4: Simplify right side
   1,200.15x = 1,164,562.69
5. Step 5: Solve for x
   x = 1,164,562.69/1,200.15
6. Step 6: Final answer
   x = 970.35