Finding the Fourth Proportional to 1,663.91, 2,296.29 and 918.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,663.91 : 2,296.29 = 918.02 : x
2. Step 2: Convert to fraction form
   1,663.91/2,296.29 = 918.02/x
3. Step 3: Cross multiply
   1,663.91x = 2,296.29 × 918.02
4. Step 4: Simplify right side
   1,663.91x = 2,108,040.15
5. Step 5: Solve for x
   x = 2,108,040.15/1,663.91
6. Step 6: Final answer
   x = 1,266.92