Finding the Fourth Proportional to 2,904.71, 4,358.01 and 1,978.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,904.71 : 4,358.01 = 1,978.88 : x
2. Step 2: Convert to fraction form
   2,904.71/4,358.01 = 1,978.88/x
3. Step 3: Cross multiply
   2,904.71x = 4,358.01 × 1,978.88
4. Step 4: Simplify right side
   2,904.71x = 8,623,978.83
5. Step 5: Solve for x
   x = 8,623,978.83/2,904.71
6. Step 6: Final answer
   x = 2,968.96