Finding the Fourth Proportional to 2,591.46, 3,888.54 and 1,979.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,591.46 : 3,888.54 = 1,979.10 : x
2. Step 2: Convert to fraction form
   2,591.46/3,888.54 = 1,979.10/x
3. Step 3: Cross multiply
   2,591.46x = 3,888.54 × 1,979.10
4. Step 4: Simplify right side
   2,591.46x = 7,695,809.51
5. Step 5: Solve for x
   x = 7,695,809.51/2,591.46
6. Step 6: Final answer
   x = 2,969.68