Finding the Fourth Proportional to 1,434.69, 2,147.49 and 774.93

Step by Step Solution

1. Step 1: Write the proportion equation
   1,434.69 : 2,147.49 = 774.93 : x
2. Step 2: Convert to fraction form
   1,434.69/2,147.49 = 774.93/x
3. Step 3: Cross multiply
   1,434.69x = 2,147.49 × 774.93
4. Step 4: Simplify right side
   1,434.69x = 1,664,154.43
5. Step 5: Solve for x
   x = 1,664,154.43/1,434.69
6. Step 6: Final answer
   x = 1,159.94