Finding the Fourth Proportional to 2,637.98, 3,956.50 and 690.08

Step by Step Solution

1. Step 1: Write the proportion equation
   2,637.98 : 3,956.50 = 690.08 : x
2. Step 2: Convert to fraction form
   2,637.98/3,956.50 = 690.08/x
3. Step 3: Cross multiply
   2,637.98x = 3,956.50 × 690.08
4. Step 4: Simplify right side
   2,637.98x = 2,730,301.52
5. Step 5: Solve for x
   x = 2,730,301.52/2,637.98
6. Step 6: Final answer
   x = 1,035.00