Finding the Fourth Proportional to 1,174.87, 1,618.71 and 775.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,174.87 : 1,618.71 = 775.82 : x
2. Step 2: Convert to fraction form
   1,174.87/1,618.71 = 775.82/x
3. Step 3: Cross multiply
   1,174.87x = 1,618.71 × 775.82
4. Step 4: Simplify right side
   1,174.87x = 1,255,827.59
5. Step 5: Solve for x
   x = 1,255,827.59/1,174.87
6. Step 6: Final answer
   x = 1,068.91