Finding the Fourth Proportional to 5,728.91, 8,592.32 and 1,980.69

Step by Step Solution

1. Step 1: Write the proportion equation
   5,728.91 : 8,592.32 = 1,980.69 : x
2. Step 2: Convert to fraction form
   5,728.91/8,592.32 = 1,980.69/x
3. Step 3: Cross multiply
   5,728.91x = 8,592.32 × 1,980.69
4. Step 4: Simplify right side
   5,728.91x = 17,018,722.30
5. Step 5: Solve for x
   x = 17,018,722.30/5,728.91
6. Step 6: Final answer
   x = 2,970.67