Finding the Fourth Proportional to 2,572.38, 3,549.89 and 1,393.45

Step by Step Solution

1. Step 1: Write the proportion equation
   2,572.38 : 3,549.89 = 1,393.45 : x
2. Step 2: Convert to fraction form
   2,572.38/3,549.89 = 1,393.45/x
3. Step 3: Cross multiply
   2,572.38x = 3,549.89 × 1,393.45
4. Step 4: Simplify right side
   2,572.38x = 4,946,602.92
5. Step 5: Solve for x
   x = 4,946,602.92/2,572.38
6. Step 6: Final answer
   x = 1,922.97