Finding the Fourth Proportional to 1,774.42, 2,658.69 and 1,078.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,774.42 : 2,658.69 = 1,078.98 : x
2. Step 2: Convert to fraction form
   1,774.42/2,658.69 = 1,078.98/x
3. Step 3: Cross multiply
   1,774.42x = 2,658.69 × 1,078.98
4. Step 4: Simplify right side
   1,774.42x = 2,868,663.37
5. Step 5: Solve for x
   x = 2,868,663.37/1,774.42
6. Step 6: Final answer
   x = 1,616.68