Finding the Fourth Proportional to 1,507.87, 2,081.37 and 910.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,507.87 : 2,081.37 = 910.69 : x
2. Step 2: Convert to fraction form
   1,507.87/2,081.37 = 910.69/x
3. Step 3: Cross multiply
   1,507.87x = 2,081.37 × 910.69
4. Step 4: Simplify right side
   1,507.87x = 1,895,490.20
5. Step 5: Solve for x
   x = 1,895,490.20/1,507.87
6. Step 6: Final answer
   x = 1,257.07