Finding the Fourth Proportional to 3,671.79, 5,066.22 and 2,478.99

Step by Step Solution

1. Step 1: Write the proportion equation
   3,671.79 : 5,066.22 = 2,478.99 : x
2. Step 2: Convert to fraction form
   3,671.79/5,066.22 = 2,478.99/x
3. Step 3: Cross multiply
   3,671.79x = 5,066.22 × 2,478.99
4. Step 4: Simplify right side
   3,671.79x = 12,559,108.72
5. Step 5: Solve for x
   x = 12,559,108.72/3,671.79
6. Step 6: Final answer
   x = 3,420.43