Finding the Fourth Proportional to 1,790.04, 2,469.78 and 1,091.40

Step by Step Solution

1. Step 1: Write the proportion equation
   1,790.04 : 2,469.78 = 1,091.40 : x
2. Step 2: Convert to fraction form
   1,790.04/2,469.78 = 1,091.40/x
3. Step 3: Cross multiply
   1,790.04x = 2,469.78 × 1,091.40
4. Step 4: Simplify right side
   1,790.04x = 2,695,517.89
5. Step 5: Solve for x
   x = 2,695,517.89/1,790.04
6. Step 6: Final answer
   x = 1,505.84