Finding the Fourth Proportional to 2,613.30, 3,918.80 and 1,225.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,613.30 : 3,918.80 = 1,225.52 : x
2. Step 2: Convert to fraction form
   2,613.30/3,918.80 = 1,225.52/x
3. Step 3: Cross multiply
   2,613.30x = 3,918.80 × 1,225.52
4. Step 4: Simplify right side
   2,613.30x = 4,802,567.78
5. Step 5: Solve for x
   x = 4,802,567.78/2,613.30
6. Step 6: Final answer
   x = 1,837.74