Finding the Fourth Proportional to 1,758.89, 2,637.31 and 663.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,758.89 : 2,637.31 = 663.34 : x
2. Step 2: Convert to fraction form
   1,758.89/2,637.31 = 663.34/x
3. Step 3: Cross multiply
   1,758.89x = 2,637.31 × 663.34
4. Step 4: Simplify right side
   1,758.89x = 1,749,429.90
5. Step 5: Solve for x
   x = 1,749,429.90/1,758.89
6. Step 6: Final answer
   x = 994.62