Finding the Fourth Proportional to 1,359.90, 1,875.65 and 862.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,359.90 : 1,875.65 = 862.02 : x
2. Step 2: Convert to fraction form
   1,359.90/1,875.65 = 862.02/x
3. Step 3: Cross multiply
   1,359.90x = 1,875.65 × 862.02
4. Step 4: Simplify right side
   1,359.90x = 1,616,843.50
5. Step 5: Solve for x
   x = 1,616,843.50/1,359.90
6. Step 6: Final answer
   x = 1,188.94