Finding the Fourth Proportional to 1,540.55, 2,125.75 and 877.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,540.55 : 2,125.75 = 877.37 : x
2. Step 2: Convert to fraction form
   1,540.55/2,125.75 = 877.37/x
3. Step 3: Cross multiply
   1,540.55x = 2,125.75 × 877.37
4. Step 4: Simplify right side
   1,540.55x = 1,865,064.89
5. Step 5: Solve for x
   x = 1,865,064.89/1,540.55
6. Step 6: Final answer
   x = 1,210.65