Finding the Fourth Proportional to 2,384.13, 3,576.71 and 978.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,384.13 : 3,576.71 = 978.55 : x
2. Step 2: Convert to fraction form
   2,384.13/3,576.71 = 978.55/x
3. Step 3: Cross multiply
   2,384.13x = 3,576.71 × 978.55
4. Step 4: Simplify right side
   2,384.13x = 3,499,989.57
5. Step 5: Solve for x
   x = 3,499,989.57/2,384.13
6. Step 6: Final answer
   x = 1,468.04