Finding the Fourth Proportional to 1,041.50, 1,557.55 and 794.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,041.50 : 1,557.55 = 794.78 : x
2. Step 2: Convert to fraction form
   1,041.50/1,557.55 = 794.78/x
3. Step 3: Cross multiply
   1,041.50x = 1,557.55 × 794.78
4. Step 4: Simplify right side
   1,041.50x = 1,237,909.59
5. Step 5: Solve for x
   x = 1,237,909.59/1,041.50
6. Step 6: Final answer
   x = 1,188.58