Finding the Fourth Proportional to 1,423.25, 2,134.91 and 773.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,423.25 : 2,134.91 = 773.98 : x
2. Step 2: Convert to fraction form
   1,423.25/2,134.91 = 773.98/x
3. Step 3: Cross multiply
   1,423.25x = 2,134.91 × 773.98
4. Step 4: Simplify right side
   1,423.25x = 1,652,375.89
5. Step 5: Solve for x
   x = 1,652,375.89/1,423.25
6. Step 6: Final answer
   x = 1,160.99