Finding the Fourth Proportional to 1,790.18, 2,469.78 and 1,370.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,790.18 : 2,469.78 = 1,370.10 : x
2. Step 2: Convert to fraction form
   1,790.18/2,469.78 = 1,370.10/x
3. Step 3: Cross multiply
   1,790.18x = 2,469.78 × 1,370.10
4. Step 4: Simplify right side
   1,790.18x = 3,383,845.58
5. Step 5: Solve for x
   x = 3,383,845.58/1,790.18
6. Step 6: Final answer
   x = 1,890.23