Finding the Fourth Proportional to 2,978.22, 4,469.76 and 1,248.06

Step by Step Solution

1. Step 1: Write the proportion equation
   2,978.22 : 4,469.76 = 1,248.06 : x
2. Step 2: Convert to fraction form
   2,978.22/4,469.76 = 1,248.06/x
3. Step 3: Cross multiply
   2,978.22x = 4,469.76 × 1,248.06
4. Step 4: Simplify right side
   2,978.22x = 5,578,528.67
5. Step 5: Solve for x
   x = 5,578,528.67/2,978.22
6. Step 6: Final answer
   x = 1,873.11