Finding the Fourth Proportional to 1,404.91, 1,938.75 and 775.49

Step by Step Solution

1. Step 1: Write the proportion equation
   1,404.91 : 1,938.75 = 775.49 : x
2. Step 2: Convert to fraction form
   1,404.91/1,938.75 = 775.49/x
3. Step 3: Cross multiply
   1,404.91x = 1,938.75 × 775.49
4. Step 4: Simplify right side
   1,404.91x = 1,503,483.90
5. Step 5: Solve for x
   x = 1,503,483.90/1,404.91
6. Step 6: Final answer
   x = 1,070.16