Finding the Fourth Proportional to 3,480.17, 4,773.23 and 3,291.89

Step by Step Solution

1. Step 1: Write the proportion equation
   3,480.17 : 4,773.23 = 3,291.89 : x
2. Step 2: Convert to fraction form
   3,480.17/4,773.23 = 3,291.89/x
3. Step 3: Cross multiply
   3,480.17x = 4,773.23 × 3,291.89
4. Step 4: Simplify right side
   3,480.17x = 15,712,956.33
5. Step 5: Solve for x
   x = 15,712,956.33/3,480.17
6. Step 6: Final answer
   x = 4,515.00