Finding the Fourth Proportional to 1,432.21, 2,146.52 and 774.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,432.21 : 2,146.52 = 774.06 : x
2. Step 2: Convert to fraction form
   1,432.21/2,146.52 = 774.06/x
3. Step 3: Cross multiply
   1,432.21x = 2,146.52 × 774.06
4. Step 4: Simplify right side
   1,432.21x = 1,661,535.27
5. Step 5: Solve for x
   x = 1,661,535.27/1,432.21
6. Step 6: Final answer
   x = 1,160.12