Finding the Fourth Proportional to 1,401.64, 1,934.24 and 877.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,401.64 : 1,934.24 = 877.96 : x
2. Step 2: Convert to fraction form
   1,401.64/1,934.24 = 877.96/x
3. Step 3: Cross multiply
   1,401.64x = 1,934.24 × 877.96
4. Step 4: Simplify right side
   1,401.64x = 1,698,180.96
5. Step 5: Solve for x
   x = 1,698,180.96/1,401.64
6. Step 6: Final answer
   x = 1,211.57