Finding the Fourth Proportional to 2,265.57, 3,124.58 and 1,913.22

Step by Step Solution

1. Step 1: Write the proportion equation
   2,265.57 : 3,124.58 = 1,913.22 : x
2. Step 2: Convert to fraction form
   2,265.57/3,124.58 = 1,913.22/x
3. Step 3: Cross multiply
   2,265.57x = 3,124.58 × 1,913.22
4. Step 4: Simplify right side
   2,265.57x = 5,977,999.38
5. Step 5: Solve for x
   x = 5,977,999.38/2,265.57
6. Step 6: Final answer
   x = 2,638.63