Finding the Fourth Proportional to 1,790.31, 2,470.86 and 1,004.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,790.31 : 2,470.86 = 1,004.61 : x
2. Step 2: Convert to fraction form
   1,790.31/2,470.86 = 1,004.61/x
3. Step 3: Cross multiply
   1,790.31x = 2,470.86 × 1,004.61
4. Step 4: Simplify right side
   1,790.31x = 2,482,250.66
5. Step 5: Solve for x
   x = 2,482,250.66/1,790.31
6. Step 6: Final answer
   x = 1,386.49