Finding the Fourth Proportional to 2,979.31, 4,467.58 and 1,105.13

Step by Step Solution

1. Step 1: Write the proportion equation
   2,979.31 : 4,467.58 = 1,105.13 : x
2. Step 2: Convert to fraction form
   2,979.31/4,467.58 = 1,105.13/x
3. Step 3: Cross multiply
   2,979.31x = 4,467.58 × 1,105.13
4. Step 4: Simplify right side
   2,979.31x = 4,937,228.82
5. Step 5: Solve for x
   x = 4,937,228.82/2,979.31
6. Step 6: Final answer
   x = 1,657.17