Finding the Fourth Proportional to 1,061.75, 1,584.74 and 904.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,061.75 : 1,584.74 = 904.56 : x
2. Step 2: Convert to fraction form
   1,061.75/1,584.74 = 904.56/x
3. Step 3: Cross multiply
   1,061.75x = 1,584.74 × 904.56
4. Step 4: Simplify right side
   1,061.75x = 1,433,492.41
5. Step 5: Solve for x
   x = 1,433,492.41/1,061.75
6. Step 6: Final answer
   x = 1,350.12