Finding the Fourth Proportional to 1,443.53, 2,166.12 and 610.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,443.53 : 2,166.12 = 610.52 : x
2. Step 2: Convert to fraction form
   1,443.53/2,166.12 = 610.52/x
3. Step 3: Cross multiply
   1,443.53x = 2,166.12 × 610.52
4. Step 4: Simplify right side
   1,443.53x = 1,322,448.75
5. Step 5: Solve for x
   x = 1,322,448.75/1,443.53
6. Step 6: Final answer
   x = 916.12