Finding the Fourth Proportional to 1,663.42, 2,295.34 and 917.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,663.42 : 2,295.34 = 917.34 : x
2. Step 2: Convert to fraction form
   1,663.42/2,295.34 = 917.34/x
3. Step 3: Cross multiply
   1,663.42x = 2,295.34 × 917.34
4. Step 4: Simplify right side
   1,663.42x = 2,105,607.20
5. Step 5: Solve for x
   x = 2,105,607.20/1,663.42
6. Step 6: Final answer
   x = 1,265.83