Finding the Fourth Proportional to 2,191.76, 3,025.32 and 2,118.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,191.76 : 3,025.32 = 2,118.80 : x
2. Step 2: Convert to fraction form
   2,191.76/3,025.32 = 2,118.80/x
3. Step 3: Cross multiply
   2,191.76x = 3,025.32 × 2,118.80
4. Step 4: Simplify right side
   2,191.76x = 6,410,048.02
5. Step 5: Solve for x
   x = 6,410,048.02/2,191.76
6. Step 6: Final answer
   x = 2,924.61