Finding the Fourth Proportional to 1,510.12, 2,084.04 and 920.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,510.12 : 2,084.04 = 920.56 : x
2. Step 2: Convert to fraction form
   1,510.12/2,084.04 = 920.56/x
3. Step 3: Cross multiply
   1,510.12x = 2,084.04 × 920.56
4. Step 4: Simplify right side
   1,510.12x = 1,918,483.86
5. Step 5: Solve for x
   x = 1,918,483.86/1,510.12
6. Step 6: Final answer
   x = 1,270.42