Finding the Fourth Proportional to 1,548.22, 2,322.90 and 715.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,548.22 : 2,322.90 = 715.69 : x
2. Step 2: Convert to fraction form
   1,548.22/2,322.90 = 715.69/x
3. Step 3: Cross multiply
   1,548.22x = 2,322.90 × 715.69
4. Step 4: Simplify right side
   1,548.22x = 1,662,468.15
5. Step 5: Solve for x
   x = 1,662,468.15/1,548.22
6. Step 6: Final answer
   x = 1,073.79