Finding the Fourth Proportional to 2,612.43, 3,915.91 and 1,224.59

Step by Step Solution

1. Step 1: Write the proportion equation
   2,612.43 : 3,915.91 = 1,224.59 : x
2. Step 2: Convert to fraction form
   2,612.43/3,915.91 = 1,224.59/x
3. Step 3: Cross multiply
   2,612.43x = 3,915.91 × 1,224.59
4. Step 4: Simplify right side
   2,612.43x = 4,795,384.23
5. Step 5: Solve for x
   x = 4,795,384.23/2,612.43
6. Step 6: Final answer
   x = 1,835.60