Finding the Fourth Proportional to 3,980.28, 5,492.88 and 2,301.62

Step by Step Solution

1. Step 1: Write the proportion equation
   3,980.28 : 5,492.88 = 2,301.62 : x
2. Step 2: Convert to fraction form
   3,980.28/5,492.88 = 2,301.62/x
3. Step 3: Cross multiply
   3,980.28x = 5,492.88 × 2,301.62
4. Step 4: Simplify right side
   3,980.28x = 12,642,522.47
5. Step 5: Solve for x
   x = 12,642,522.47/3,980.28
6. Step 6: Final answer
   x = 3,176.29