Finding the Fourth Proportional to 2,339.72, 3,506.44 and 877.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,339.72 : 3,506.44 = 877.40 : x
2. Step 2: Convert to fraction form
   2,339.72/3,506.44 = 877.40/x
3. Step 3: Cross multiply
   2,339.72x = 3,506.44 × 877.40
4. Step 4: Simplify right side
   2,339.72x = 3,076,550.46
5. Step 5: Solve for x
   x = 3,076,550.46/2,339.72
6. Step 6: Final answer
   x = 1,314.92