Finding the Fourth Proportional to 2,635.89, 3,955.87 and 993.93

Step by Step Solution

1. Step 1: Write the proportion equation
   2,635.89 : 3,955.87 = 993.93 : x
2. Step 2: Convert to fraction form
   2,635.89/3,955.87 = 993.93/x
3. Step 3: Cross multiply
   2,635.89x = 3,955.87 × 993.93
4. Step 4: Simplify right side
   2,635.89x = 3,931,857.87
5. Step 5: Solve for x
   x = 3,931,857.87/2,635.89
6. Step 6: Final answer
   x = 1,491.66