Finding the Fourth Proportional to 1,359.86, 1,876.72 and 862.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,359.86 : 1,876.72 = 862.32 : x
2. Step 2: Convert to fraction form
   1,359.86/1,876.72 = 862.32/x
3. Step 3: Cross multiply
   1,359.86x = 1,876.72 × 862.32
4. Step 4: Simplify right side
   1,359.86x = 1,618,333.19
5. Step 5: Solve for x
   x = 1,618,333.19/1,359.86
6. Step 6: Final answer
   x = 1,190.07