Finding the Fourth Proportional to 1,778.76, 2,454.71 and 1,070.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,778.76 : 2,454.71 = 1,070.69 : x
2. Step 2: Convert to fraction form
   1,778.76/2,454.71 = 1,070.69/x
3. Step 3: Cross multiply
   1,778.76x = 2,454.71 × 1,070.69
4. Step 4: Simplify right side
   1,778.76x = 2,628,215.82
5. Step 5: Solve for x
   x = 2,628,215.82/1,778.76
6. Step 6: Final answer
   x = 1,477.56