Finding the Fourth Proportional to 1,359.15, 1,875.35 and 799.64

Step by Step Solution

1. Step 1: Write the proportion equation
   1,359.15 : 1,875.35 = 799.64 : x
2. Step 2: Convert to fraction form
   1,359.15/1,875.35 = 799.64/x
3. Step 3: Cross multiply
   1,359.15x = 1,875.35 × 799.64
4. Step 4: Simplify right side
   1,359.15x = 1,499,604.53
5. Step 5: Solve for x
   x = 1,499,604.53/1,359.15
6. Step 6: Final answer
   x = 1,103.34