Finding the Fourth Proportional to 2,702.43, 4,051.98 and 853.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,702.43 : 4,051.98 = 853.02 : x
2. Step 2: Convert to fraction form
   2,702.43/4,051.98 = 853.02/x
3. Step 3: Cross multiply
   2,702.43x = 4,051.98 × 853.02
4. Step 4: Simplify right side
   2,702.43x = 3,456,419.98
5. Step 5: Solve for x
   x = 3,456,419.98/2,702.43
6. Step 6: Final answer
   x = 1,279.00