Finding the Fourth Proportional to 2,392.02, 3,587.49 and 853.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,392.02 : 3,587.49 = 853.02 : x
2. Step 2: Convert to fraction form
   2,392.02/3,587.49 = 853.02/x
3. Step 3: Cross multiply
   2,392.02x = 3,587.49 × 853.02
4. Step 4: Simplify right side
   2,392.02x = 3,060,200.72
5. Step 5: Solve for x
   x = 3,060,200.72/2,392.02
6. Step 6: Final answer
   x = 1,279.34