Finding the Fourth Proportional to 2,872.85, 4,307.25 and 1,116.39

Step by Step Solution

1. Step 1: Write the proportion equation
   2,872.85 : 4,307.25 = 1,116.39 : x
2. Step 2: Convert to fraction form
   2,872.85/4,307.25 = 1,116.39/x
3. Step 3: Cross multiply
   2,872.85x = 4,307.25 × 1,116.39
4. Step 4: Simplify right side
   2,872.85x = 4,808,570.83
5. Step 5: Solve for x
   x = 4,808,570.83/2,872.85
6. Step 6: Final answer
   x = 1,673.80