Finding the Fourth Proportional to 1,507.55, 2,080.62 and 910.07

Step by Step Solution

1. Step 1: Write the proportion equation
   1,507.55 : 2,080.62 = 910.07 : x
2. Step 2: Convert to fraction form
   1,507.55/2,080.62 = 910.07/x
3. Step 3: Cross multiply
   1,507.55x = 2,080.62 × 910.07
4. Step 4: Simplify right side
   1,507.55x = 1,893,505.29
5. Step 5: Solve for x
   x = 1,893,505.29/1,507.55
6. Step 6: Final answer
   x = 1,256.02