Finding the Fourth Proportional to 2,347.27, 3,538.49 and 2,188.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,347.27 : 3,538.49 = 2,188.72 : x
2. Step 2: Convert to fraction form
   2,347.27/3,538.49 = 2,188.72/x
3. Step 3: Cross multiply
   2,347.27x = 3,538.49 × 2,188.72
4. Step 4: Simplify right side
   2,347.27x = 7,744,763.83
5. Step 5: Solve for x
   x = 7,744,763.83/2,347.27
6. Step 6: Final answer
   x = 3,299.48