Finding the Fourth Proportional to 2,359.96, 3,540.54 and 2,211.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,359.96 : 3,540.54 = 2,211.72 : x
2. Step 2: Convert to fraction form
   2,359.96/3,540.54 = 2,211.72/x
3. Step 3: Cross multiply
   2,359.96x = 3,540.54 × 2,211.72
4. Step 4: Simplify right side
   2,359.96x = 7,830,683.13
5. Step 5: Solve for x
   x = 7,830,683.13/2,359.96
6. Step 6: Final answer
   x = 3,318.14