Finding the Fourth Proportional to 2,457.62, 3,681.50 and 1,221.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,457.62 : 3,681.50 = 1,221.30 : x
2. Step 2: Convert to fraction form
   2,457.62/3,681.50 = 1,221.30/x
3. Step 3: Cross multiply
   2,457.62x = 3,681.50 × 1,221.30
4. Step 4: Simplify right side
   2,457.62x = 4,496,215.95
5. Step 5: Solve for x
   x = 4,496,215.95/2,457.62
6. Step 6: Final answer
   x = 1,829.50