Finding the Fourth Proportional to 2,978.19, 4,466.63 and 1,222.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,978.19 : 4,466.63 = 1,222.76 : x
2. Step 2: Convert to fraction form
   2,978.19/4,466.63 = 1,222.76/x
3. Step 3: Cross multiply
   2,978.19x = 4,466.63 × 1,222.76
4. Step 4: Simplify right side
   2,978.19x = 5,461,630.72
5. Step 5: Solve for x
   x = 5,461,630.72/2,978.19
6. Step 6: Final answer
   x = 1,833.88