Finding the Fourth Proportional to 1,404.94, 1,938.83 and 775.49

Step by Step Solution

1. Step 1: Write the proportion equation
   1,404.94 : 1,938.83 = 775.49 : x
2. Step 2: Convert to fraction form
   1,404.94/1,938.83 = 775.49/x
3. Step 3: Cross multiply
   1,404.94x = 1,938.83 × 775.49
4. Step 4: Simplify right side
   1,404.94x = 1,503,543.28
5. Step 5: Solve for x
   x = 1,503,543.28/1,404.94
6. Step 6: Final answer
   x = 1,070.18