Finding the Fourth Proportional to 1,359.18, 1,875.42 and 799.74

Step by Step Solution

1. Step 1: Write the proportion equation
   1,359.18 : 1,875.42 = 799.74 : x
2. Step 2: Convert to fraction form
   1,359.18/1,875.42 = 799.74/x
3. Step 3: Cross multiply
   1,359.18x = 1,875.42 × 799.74
4. Step 4: Simplify right side
   1,359.18x = 1,499,848.39
5. Step 5: Solve for x
   x = 1,499,848.39/1,359.18
6. Step 6: Final answer
   x = 1,103.50