Finding the Fourth Proportional to 1,336.34, 2,003.30 and 758.81

Step by Step Solution

1. Step 1: Write the proportion equation
   1,336.34 : 2,003.30 = 758.81 : x
2. Step 2: Convert to fraction form
   1,336.34/2,003.30 = 758.81/x
3. Step 3: Cross multiply
   1,336.34x = 2,003.30 × 758.81
4. Step 4: Simplify right side
   1,336.34x = 1,520,128.13
5. Step 5: Solve for x
   x = 1,520,128.13/1,336.34
6. Step 6: Final answer
   x = 1,137.53