Finding the Fourth Proportional to 1,695.50, 2,339.40 and 987.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,695.50 : 2,339.40 = 987.18 : x
2. Step 2: Convert to fraction form
   1,695.50/2,339.40 = 987.18/x
3. Step 3: Cross multiply
   1,695.50x = 2,339.40 × 987.18
4. Step 4: Simplify right side
   1,695.50x = 2,309,403.96
5. Step 5: Solve for x
   x = 2,309,403.96/1,695.50
6. Step 6: Final answer
   x = 1,362.08