Finding the Fourth Proportional to 1,663.43, 2,295.59 and 917.51

Step by Step Solution

1. Step 1: Write the proportion equation
   1,663.43 : 2,295.59 = 917.51 : x
2. Step 2: Convert to fraction form
   1,663.43/2,295.59 = 917.51/x
3. Step 3: Cross multiply
   1,663.43x = 2,295.59 × 917.51
4. Step 4: Simplify right side
   1,663.43x = 2,106,210.72
5. Step 5: Solve for x
   x = 2,106,210.72/1,663.43
6. Step 6: Final answer
   x = 1,266.19