Finding the Fourth Proportional to 1,540.54, 2,126.17 and 877.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,540.54 : 2,126.17 = 877.46 : x
2. Step 2: Convert to fraction form
   1,540.54/2,126.17 = 877.46/x
3. Step 3: Cross multiply
   1,540.54x = 2,126.17 × 877.46
4. Step 4: Simplify right side
   1,540.54x = 1,865,616.30
5. Step 5: Solve for x
   x = 1,865,616.30/1,540.54
6. Step 6: Final answer
   x = 1,211.01