Finding the Fourth Proportional to 1,403.46, 1,936.76 and 773.99

Step by Step Solution

1. Step 1: Write the proportion equation
   1,403.46 : 1,936.76 = 773.99 : x
2. Step 2: Convert to fraction form
   1,403.46/1,936.76 = 773.99/x
3. Step 3: Cross multiply
   1,403.46x = 1,936.76 × 773.99
4. Step 4: Simplify right side
   1,403.46x = 1,499,029.48
5. Step 5: Solve for x
   x = 1,499,029.48/1,403.46
6. Step 6: Final answer
   x = 1,068.10