Finding the Fourth Proportional to 1,507.75, 2,080.70 and 910.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,507.75 : 2,080.70 = 910.27 : x
2. Step 2: Convert to fraction form
   1,507.75/2,080.70 = 910.27/x
3. Step 3: Cross multiply
   1,507.75x = 2,080.70 × 910.27
4. Step 4: Simplify right side
   1,507.75x = 1,893,995.86
5. Step 5: Solve for x
   x = 1,893,995.86/1,507.75
6. Step 6: Final answer
   x = 1,256.18