Finding the Fourth Proportional to 1,501.89, 2,072.61 and 912.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,501.89 : 2,072.61 = 912.42 : x
2. Step 2: Convert to fraction form
   1,501.89/2,072.61 = 912.42/x
3. Step 3: Cross multiply
   1,501.89x = 2,072.61 × 912.42
4. Step 4: Simplify right side
   1,501.89x = 1,891,090.82
5. Step 5: Solve for x
   x = 1,891,090.82/1,501.89
6. Step 6: Final answer
   x = 1,259.14