Finding the Fourth Proportional to 2,978.65, 4,468.18 and 898.47

Step by Step Solution

1. Step 1: Write the proportion equation
   2,978.65 : 4,468.18 = 898.47 : x
2. Step 2: Convert to fraction form
   2,978.65/4,468.18 = 898.47/x
3. Step 3: Cross multiply
   2,978.65x = 4,468.18 × 898.47
4. Step 4: Simplify right side
   2,978.65x = 4,014,525.68
5. Step 5: Solve for x
   x = 4,014,525.68/2,978.65
6. Step 6: Final answer
   x = 1,347.77