Finding the Fourth Proportional to 2,572.30, 3,549.78 and 1,393.37

Step by Step Solution

1. Step 1: Write the proportion equation
   2,572.30 : 3,549.78 = 1,393.37 : x
2. Step 2: Convert to fraction form
   2,572.30/3,549.78 = 1,393.37/x
3. Step 3: Cross multiply
   2,572.30x = 3,549.78 × 1,393.37
4. Step 4: Simplify right side
   2,572.30x = 4,946,156.96
5. Step 5: Solve for x
   x = 4,946,156.96/2,572.30
6. Step 6: Final answer
   x = 1,922.85