Finding the Fourth Proportional to 1,778.34, 2,454.18 and 1,070.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,778.34 : 2,454.18 = 1,070.31 : x
2. Step 2: Convert to fraction form
   1,778.34/2,454.18 = 1,070.31/x
3. Step 3: Cross multiply
   1,778.34x = 2,454.18 × 1,070.31
4. Step 4: Simplify right side
   1,778.34x = 2,626,733.40
5. Step 5: Solve for x
   x = 2,626,733.40/1,778.34
6. Step 6: Final answer
   x = 1,477.07