Finding the Fourth Proportional to 1,510.38, 2,084.33 and 912.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,510.38 : 2,084.33 = 912.89 : x
2. Step 2: Convert to fraction form
   1,510.38/2,084.33 = 912.89/x
3. Step 3: Cross multiply
   1,510.38x = 2,084.33 × 912.89
4. Step 4: Simplify right side
   1,510.38x = 1,902,771.51
5. Step 5: Solve for x
   x = 1,902,771.51/1,510.38
6. Step 6: Final answer
   x = 1,259.80