Finding the Fourth Proportional to 2,978.48, 4,468.08 and 1,247.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,978.48 : 4,468.08 = 1,247.12 : x
2. Step 2: Convert to fraction form
   2,978.48/4,468.08 = 1,247.12/x
3. Step 3: Cross multiply
   2,978.48x = 4,468.08 × 1,247.12
4. Step 4: Simplify right side
   2,978.48x = 5,572,231.93
5. Step 5: Solve for x
   x = 5,572,231.93/2,978.48
6. Step 6: Final answer
   x = 1,870.83