Finding the Fourth Proportional to 1,602.92, 2,404.15 and 986.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,602.92 : 2,404.15 = 986.31 : x
2. Step 2: Convert to fraction form
   1,602.92/2,404.15 = 986.31/x
3. Step 3: Cross multiply
   1,602.92x = 2,404.15 × 986.31
4. Step 4: Simplify right side
   1,602.92x = 2,371,234.72
5. Step 5: Solve for x
   x = 2,371,234.72/1,602.92
6. Step 6: Final answer
   x = 1,479.32