Finding the Fourth Proportional to 2,978.76, 4,467.28 and 1,199.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,978.76 : 4,467.28 = 1,199.81 : x
2. Step 2: Convert to fraction form
   2,978.76/4,467.28 = 1,199.81/x
3. Step 3: Cross multiply
   2,978.76x = 4,467.28 × 1,199.81
4. Step 4: Simplify right side
   2,978.76x = 5,359,899.32
5. Step 5: Solve for x
   x = 5,359,899.32/2,978.76
6. Step 6: Final answer
   x = 1,799.37