Finding the Fourth Proportional to 1,790.86, 2,471.61 and 1,004.91

Step by Step Solution

1. Step 1: Write the proportion equation
   1,790.86 : 2,471.61 = 1,004.91 : x
2. Step 2: Convert to fraction form
   1,790.86/2,471.61 = 1,004.91/x
3. Step 3: Cross multiply
   1,790.86x = 2,471.61 × 1,004.91
4. Step 4: Simplify right side
   1,790.86x = 2,483,740.10
5. Step 5: Solve for x
   x = 2,483,740.10/1,790.86
6. Step 6: Final answer
   x = 1,386.90