Finding the Fourth Proportional to 2,636.56, 3,955.74 and 993.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,636.56 : 3,955.74 = 993.34 : x
2. Step 2: Convert to fraction form
   2,636.56/3,955.74 = 993.34/x
3. Step 3: Cross multiply
   2,636.56x = 3,955.74 × 993.34
4. Step 4: Simplify right side
   2,636.56x = 3,929,394.77
5. Step 5: Solve for x
   x = 3,929,394.77/2,636.56
6. Step 6: Final answer
   x = 1,490.35