Finding the Fourth Proportional to 1,400.49, 1,932.72 and 771.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,400.49 : 1,932.72 = 771.05 : x
2. Step 2: Convert to fraction form
   1,400.49/1,932.72 = 771.05/x
3. Step 3: Cross multiply
   1,400.49x = 1,932.72 × 771.05
4. Step 4: Simplify right side
   1,400.49x = 1,490,219.90
5. Step 5: Solve for x
   x = 1,490,219.90/1,400.49
6. Step 6: Final answer
   x = 1,064.07