Finding the Fourth Proportional to 2,611.52, 3,918.72 and 1,457.92

Step by Step Solution

1. Step 1: Write the proportion equation
   2,611.52 : 3,918.72 = 1,457.92 : x
2. Step 2: Convert to fraction form
   2,611.52/3,918.72 = 1,457.92/x
3. Step 3: Cross multiply
   2,611.52x = 3,918.72 × 1,457.92
4. Step 4: Simplify right side
   2,611.52x = 5,713,180.26
5. Step 5: Solve for x
   x = 5,713,180.26/2,611.52
6. Step 6: Final answer
   x = 2,187.68