Finding the Fourth Proportional to 1,935.61, 2,902.70 and 702.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,935.61 : 2,902.70 = 702.72 : x
2. Step 2: Convert to fraction form
   1,935.61/2,902.70 = 702.72/x
3. Step 3: Cross multiply
   1,935.61x = 2,902.70 × 702.72
4. Step 4: Simplify right side
   1,935.61x = 2,039,787.10
5. Step 5: Solve for x
   x = 2,039,787.10/1,935.61
6. Step 6: Final answer
   x = 1,053.82