Finding the Fourth Proportional to 1,338.90, 1,847.76 and 749.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,338.90 : 1,847.76 = 749.55 : x
2. Step 2: Convert to fraction form
   1,338.90/1,847.76 = 749.55/x
3. Step 3: Cross multiply
   1,338.90x = 1,847.76 × 749.55
4. Step 4: Simplify right side
   1,338.90x = 1,384,988.51
5. Step 5: Solve for x
   x = 1,384,988.51/1,338.90
6. Step 6: Final answer
   x = 1,034.42