Finding the Fourth Proportional to 2,978.20, 4,467.36 and 1,130.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,978.20 : 4,467.36 = 1,130.18 : x
2. Step 2: Convert to fraction form
   2,978.20/4,467.36 = 1,130.18/x
3. Step 3: Cross multiply
   2,978.20x = 4,467.36 × 1,130.18
4. Step 4: Simplify right side
   2,978.20x = 5,048,920.92
5. Step 5: Solve for x
   x = 5,048,920.92/2,978.20
6. Step 6: Final answer
   x = 1,695.30