Finding the Fourth Proportional to 1,131.48, 1,560.74 and 799.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,131.48 : 1,560.74 = 799.88 : x
2. Step 2: Convert to fraction form
   1,131.48/1,560.74 = 799.88/x
3. Step 3: Cross multiply
   1,131.48x = 1,560.74 × 799.88
4. Step 4: Simplify right side
   1,131.48x = 1,248,404.71
5. Step 5: Solve for x
   x = 1,248,404.71/1,131.48
6. Step 6: Final answer
   x = 1,103.34