Finding the Fourth Proportional to 2,619.48, 3,925.98 and 1,321.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,619.48 : 3,925.98 = 1,321.32 : x
2. Step 2: Convert to fraction form
   2,619.48/3,925.98 = 1,321.32/x
3. Step 3: Cross multiply
   2,619.48x = 3,925.98 × 1,321.32
4. Step 4: Simplify right side
   2,619.48x = 5,187,475.89
5. Step 5: Solve for x
   x = 5,187,475.89/2,619.48
6. Step 6: Final answer
   x = 1,980.35