Finding the Fourth Proportional to 1,540.32, 2,126.01 and 877.53

Step by Step Solution

1. Step 1: Write the proportion equation
   1,540.32 : 2,126.01 = 877.53 : x
2. Step 2: Convert to fraction form
   1,540.32/2,126.01 = 877.53/x
3. Step 3: Cross multiply
   1,540.32x = 2,126.01 × 877.53
4. Step 4: Simplify right side
   1,540.32x = 1,865,637.56
5. Step 5: Solve for x
   x = 1,865,637.56/1,540.32
6. Step 6: Final answer
   x = 1,211.20