Finding the Fourth Proportional to 1,638.09, 2,457.50 and 483.93

Step by Step Solution

1. Step 1: Write the proportion equation
   1,638.09 : 2,457.50 = 483.93 : x
2. Step 2: Convert to fraction form
   1,638.09/2,457.50 = 483.93/x
3. Step 3: Cross multiply
   1,638.09x = 2,457.50 × 483.93
4. Step 4: Simplify right side
   1,638.09x = 1,189,255.56
5. Step 5: Solve for x
   x = 1,189,255.56/1,638.09
6. Step 6: Final answer
   x = 726.00