Finding the Fourth Proportional to 1,664.19, 2,296.47 and 918.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,664.19 : 2,296.47 = 918.15 : x
2. Step 2: Convert to fraction form
   1,664.19/2,296.47 = 918.15/x
3. Step 3: Cross multiply
   1,664.19x = 2,296.47 × 918.15
4. Step 4: Simplify right side
   1,664.19x = 2,108,503.93
5. Step 5: Solve for x
   x = 2,108,503.93/1,664.19
6. Step 6: Final answer
   x = 1,266.99