Finding the Fourth Proportional to 1,401.76, 1,934.58 and 877.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,401.76 : 1,934.58 = 877.96 : x
2. Step 2: Convert to fraction form
   1,401.76/1,934.58 = 877.96/x
3. Step 3: Cross multiply
   1,401.76x = 1,934.58 × 877.96
4. Step 4: Simplify right side
   1,401.76x = 1,698,483.86
5. Step 5: Solve for x
   x = 1,698,483.86/1,401.76
6. Step 6: Final answer
   x = 1,211.68