Finding the Fourth Proportional to 1,411.02, 1,947.21 and 772.95

Step by Step Solution

1. Step 1: Write the proportion equation
   1,411.02 : 1,947.21 = 772.95 : x
2. Step 2: Convert to fraction form
   1,411.02/1,947.21 = 772.95/x
3. Step 3: Cross multiply
   1,411.02x = 1,947.21 × 772.95
4. Step 4: Simplify right side
   1,411.02x = 1,505,095.97
5. Step 5: Solve for x
   x = 1,505,095.97/1,411.02
6. Step 6: Final answer
   x = 1,066.67