Finding the Fourth Proportional to 2,572.17, 3,549.56 and 1,393.22

Step by Step Solution

1. Step 1: Write the proportion equation
   2,572.17 : 3,549.56 = 1,393.22 : x
2. Step 2: Convert to fraction form
   2,572.17/3,549.56 = 1,393.22/x
3. Step 3: Cross multiply
   2,572.17x = 3,549.56 × 1,393.22
4. Step 4: Simplify right side
   2,572.17x = 4,945,317.98
5. Step 5: Solve for x
   x = 4,945,317.98/2,572.17
6. Step 6: Final answer
   x = 1,922.62