Finding the Fourth Proportional to 1,996.58, 2,994.42 and 763.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,996.58 : 2,994.42 = 763.55 : x
2. Step 2: Convert to fraction form
   1,996.58/2,994.42 = 763.55/x
3. Step 3: Cross multiply
   1,996.58x = 2,994.42 × 763.55
4. Step 4: Simplify right side
   1,996.58x = 2,286,389.39
5. Step 5: Solve for x
   x = 2,286,389.39/1,996.58
6. Step 6: Final answer
   x = 1,145.15