Finding the Fourth Proportional to 1,404.79, 1,938.72 and 775.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,404.79 : 1,938.72 = 775.37 : x
2. Step 2: Convert to fraction form
   1,404.79/1,938.72 = 775.37/x
3. Step 3: Cross multiply
   1,404.79x = 1,938.72 × 775.37
4. Step 4: Simplify right side
   1,404.79x = 1,503,233.08
5. Step 5: Solve for x
   x = 1,503,233.08/1,404.79
6. Step 6: Final answer
   x = 1,070.08