Finding the Fourth Proportional to 2,978.79, 4,468.16 and 757.63

Step by Step Solution

1. Step 1: Write the proportion equation
   2,978.79 : 4,468.16 = 757.63 : x
2. Step 2: Convert to fraction form
   2,978.79/4,468.16 = 757.63/x
3. Step 3: Cross multiply
   2,978.79x = 4,468.16 × 757.63
4. Step 4: Simplify right side
   2,978.79x = 3,385,210.64
5. Step 5: Solve for x
   x = 3,385,210.64/2,978.79
6. Step 6: Final answer
   x = 1,136.44