Finding the Fourth Proportional to 2,961.78, 4,439.92 and 1,114.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,961.78 : 4,439.92 = 1,114.12 : x
2. Step 2: Convert to fraction form
   2,961.78/4,439.92 = 1,114.12/x
3. Step 3: Cross multiply
   2,961.78x = 4,439.92 × 1,114.12
4. Step 4: Simplify right side
   2,961.78x = 4,946,599.17
5. Step 5: Solve for x
   x = 4,946,599.17/2,961.78
6. Step 6: Final answer
   x = 1,670.14