Finding the Fourth Proportional to 1,019.12, 1,404.78 and 934.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,019.12 : 1,404.78 = 934.37 : x
2. Step 2: Convert to fraction form
   1,019.12/1,404.78 = 934.37/x
3. Step 3: Cross multiply
   1,019.12x = 1,404.78 × 934.37
4. Step 4: Simplify right side
   1,019.12x = 1,312,579.03
5. Step 5: Solve for x
   x = 1,312,579.03/1,019.12
6. Step 6: Final answer
   x = 1,287.96