Finding the Fourth Proportional to 1,401.88, 1,934.04 and 877.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,401.88 : 1,934.04 = 877.72 : x
2. Step 2: Convert to fraction form
   1,401.88/1,934.04 = 877.72/x
3. Step 3: Cross multiply
   1,401.88x = 1,934.04 × 877.72
4. Step 4: Simplify right side
   1,401.88x = 1,697,545.59
5. Step 5: Solve for x
   x = 1,697,545.59/1,401.88
6. Step 6: Final answer
   x = 1,210.91