Finding the Fourth Proportional to 2,540.32, 3,804.76 and 1,980.65

Step by Step Solution

1. Step 1: Write the proportion equation
   2,540.32 : 3,804.76 = 1,980.65 : x
2. Step 2: Convert to fraction form
   2,540.32/3,804.76 = 1,980.65/x
3. Step 3: Cross multiply
   2,540.32x = 3,804.76 × 1,980.65
4. Step 4: Simplify right side
   2,540.32x = 7,535,897.89
5. Step 5: Solve for x
   x = 7,535,897.89/2,540.32
6. Step 6: Final answer
   x = 2,966.52