Finding the Fourth Proportional to 1,685.24, 2,326.04 and 987.04

Step by Step Solution

1. Step 1: Write the proportion equation
   1,685.24 : 2,326.04 = 987.04 : x
2. Step 2: Convert to fraction form
   1,685.24/2,326.04 = 987.04/x
3. Step 3: Cross multiply
   1,685.24x = 2,326.04 × 987.04
4. Step 4: Simplify right side
   1,685.24x = 2,295,894.52
5. Step 5: Solve for x
   x = 2,295,894.52/1,685.24
6. Step 6: Final answer
   x = 1,362.35