Finding the Fourth Proportional to 1,363.02, 1,880.91 and 773.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,363.02 : 1,880.91 = 773.61 : x
2. Step 2: Convert to fraction form
   1,363.02/1,880.91 = 773.61/x
3. Step 3: Cross multiply
   1,363.02x = 1,880.91 × 773.61
4. Step 4: Simplify right side
   1,363.02x = 1,455,090.79
5. Step 5: Solve for x
   x = 1,455,090.79/1,363.02
6. Step 6: Final answer
   x = 1,067.55