Finding the Fourth Proportional to 1,514.88, 2,090.52 and 917.40

Step by Step Solution

1. Step 1: Write the proportion equation
   1,514.88 : 2,090.52 = 917.40 : x
2. Step 2: Convert to fraction form
   1,514.88/2,090.52 = 917.40/x
3. Step 3: Cross multiply
   1,514.88x = 2,090.52 × 917.40
4. Step 4: Simplify right side
   1,514.88x = 1,917,843.05
5. Step 5: Solve for x
   x = 1,917,843.05/1,514.88
6. Step 6: Final answer
   x = 1,266.00