Finding the Fourth Proportional to 2,978.24, 4,465.92 and 897.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,978.24 : 4,465.92 = 897.86 : x
2. Step 2: Convert to fraction form
   2,978.24/4,465.92 = 897.86/x
3. Step 3: Cross multiply
   2,978.24x = 4,465.92 × 897.86
4. Step 4: Simplify right side
   2,978.24x = 4,009,782.10
5. Step 5: Solve for x
   x = 4,009,782.10/2,978.24
6. Step 6: Final answer
   x = 1,346.36