Finding the Fourth Proportional to 1,369.61, 1,890.06 and 748.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,369.61 : 1,890.06 = 748.61 : x
2. Step 2: Convert to fraction form
   1,369.61/1,890.06 = 748.61/x
3. Step 3: Cross multiply
   1,369.61x = 1,890.06 × 748.61
4. Step 4: Simplify right side
   1,369.61x = 1,414,917.82
5. Step 5: Solve for x
   x = 1,414,917.82/1,369.61
6. Step 6: Final answer
   x = 1,033.08