Finding the Fourth Proportional to 2,572.39, 3,549.89 and 1,393.46

Step by Step Solution

1. Step 1: Write the proportion equation
   2,572.39 : 3,549.89 = 1,393.46 : x
2. Step 2: Convert to fraction form
   2,572.39/3,549.89 = 1,393.46/x
3. Step 3: Cross multiply
   2,572.39x = 3,549.89 × 1,393.46
4. Step 4: Simplify right side
   2,572.39x = 4,946,628.77
5. Step 5: Solve for x
   x = 4,946,628.77/2,572.39
6. Step 6: Final answer
   x = 1,922.97