Finding the Fourth Proportional to 1,200.51, 1,656.72 and 702.99

Step by Step Solution

1. Step 1: Write the proportion equation
   1,200.51 : 1,656.72 = 702.99 : x
2. Step 2: Convert to fraction form
   1,200.51/1,656.72 = 702.99/x
3. Step 3: Cross multiply
   1,200.51x = 1,656.72 × 702.99
4. Step 4: Simplify right side
   1,200.51x = 1,164,657.59
5. Step 5: Solve for x
   x = 1,164,657.59/1,200.51
6. Step 6: Final answer
   x = 970.14