Finding the Fourth Proportional to 2,191.02, 3,263.28 and 2,180.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,191.02 : 3,263.28 = 2,180.42 : x
2. Step 2: Convert to fraction form
   2,191.02/3,263.28 = 2,180.42/x
3. Step 3: Cross multiply
   2,191.02x = 3,263.28 × 2,180.42
4. Step 4: Simplify right side
   2,191.02x = 7,115,320.98
5. Step 5: Solve for x
   x = 7,115,320.98/2,191.02
6. Step 6: Final answer
   x = 3,247.49