Finding the Fourth Proportional to 2,978.56, 4,463.68 and 1,245.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,978.56 : 4,463.68 = 1,245.12 : x
2. Step 2: Convert to fraction form
   2,978.56/4,463.68 = 1,245.12/x
3. Step 3: Cross multiply
   2,978.56x = 4,463.68 × 1,245.12
4. Step 4: Simplify right side
   2,978.56x = 5,557,817.24
5. Step 5: Solve for x
   x = 5,557,817.24/2,978.56
6. Step 6: Final answer
   x = 1,865.94