Finding the Fourth Proportional to 1,274.77, 1,758.85 and 854.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,274.77 : 1,758.85 = 854.82 : x
2. Step 2: Convert to fraction form
   1,274.77/1,758.85 = 854.82/x
3. Step 3: Cross multiply
   1,274.77x = 1,758.85 × 854.82
4. Step 4: Simplify right side
   1,274.77x = 1,503,498.02
5. Step 5: Solve for x
   x = 1,503,498.02/1,274.77
6. Step 6: Final answer
   x = 1,179.43