Finding the Fourth Proportional to 1,872.79, 2,807.22 and 702.03

Step by Step Solution

1. Step 1: Write the proportion equation
   1,872.79 : 2,807.22 = 702.03 : x
2. Step 2: Convert to fraction form
   1,872.79/2,807.22 = 702.03/x
3. Step 3: Cross multiply
   1,872.79x = 2,807.22 × 702.03
4. Step 4: Simplify right side
   1,872.79x = 1,970,749.15
5. Step 5: Solve for x
   x = 1,970,749.15/1,872.79
6. Step 6: Final answer
   x = 1,052.31