Finding the Fourth Proportional to 2,789.34, 4,184.13 and 1,057.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,789.34 : 4,184.13 = 1,057.02 : x
2. Step 2: Convert to fraction form
   2,789.34/4,184.13 = 1,057.02/x
3. Step 3: Cross multiply
   2,789.34x = 4,184.13 × 1,057.02
4. Step 4: Simplify right side
   2,789.34x = 4,422,709.09
5. Step 5: Solve for x
   x = 4,422,709.09/2,789.34
6. Step 6: Final answer
   x = 1,585.58