Finding the Fourth Proportional to 1,109.46, 1,661.52 and 877.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,109.46 : 1,661.52 = 877.59 : x
2. Step 2: Convert to fraction form
   1,109.46/1,661.52 = 877.59/x
3. Step 3: Cross multiply
   1,109.46x = 1,661.52 × 877.59
4. Step 4: Simplify right side
   1,109.46x = 1,458,138.83
5. Step 5: Solve for x
   x = 1,458,138.83/1,109.46
6. Step 6: Final answer
   x = 1,314.28