Finding the Fourth Proportional to 1,790.32, 2,470.72 and 1,004.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,790.32 : 2,470.72 = 1,004.38 : x
2. Step 2: Convert to fraction form
   1,790.32/2,470.72 = 1,004.38/x
3. Step 3: Cross multiply
   1,790.32x = 2,470.72 × 1,004.38
4. Step 4: Simplify right side
   1,790.32x = 2,481,541.75
5. Step 5: Solve for x
   x = 2,481,541.75/1,790.32
6. Step 6: Final answer
   x = 1,386.09