Finding the Fourth Proportional to 2,610.12, 3,916.14 and 1,223.91

Step by Step Solution

1. Step 1: Write the proportion equation
   2,610.12 : 3,916.14 = 1,223.91 : x
2. Step 2: Convert to fraction form
   2,610.12/3,916.14 = 1,223.91/x
3. Step 3: Cross multiply
   2,610.12x = 3,916.14 × 1,223.91
4. Step 4: Simplify right side
   2,610.12x = 4,793,002.91
5. Step 5: Solve for x
   x = 4,793,002.91/2,610.12
6. Step 6: Final answer
   x = 1,836.32