Finding the Fourth Proportional to 1,501.88, 2,072.59 and 912.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,501.88 : 2,072.59 = 912.30 : x
2. Step 2: Convert to fraction form
   1,501.88/2,072.59 = 912.30/x
3. Step 3: Cross multiply
   1,501.88x = 2,072.59 × 912.30
4. Step 4: Simplify right side
   1,501.88x = 1,890,813.80
5. Step 5: Solve for x
   x = 1,890,813.80/1,501.88
6. Step 6: Final answer
   x = 1,258.97