Finding the Fourth Proportional to 1,401.44, 1,934.68 and 877.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,401.44 : 1,934.68 = 877.76 : x
2. Step 2: Convert to fraction form
   1,401.44/1,934.68 = 877.76/x
3. Step 3: Cross multiply
   1,401.44x = 1,934.68 × 877.76
4. Step 4: Simplify right side
   1,401.44x = 1,698,184.72
5. Step 5: Solve for x
   x = 1,698,184.72/1,401.44
6. Step 6: Final answer
   x = 1,211.74