Finding the Fourth Proportional to 1,369.98, 1,890.57 and 748.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,369.98 : 1,890.57 = 748.98 : x
2. Step 2: Convert to fraction form
   1,369.98/1,890.57 = 748.98/x
3. Step 3: Cross multiply
   1,369.98x = 1,890.57 × 748.98
4. Step 4: Simplify right side
   1,369.98x = 1,415,999.12
5. Step 5: Solve for x
   x = 1,415,999.12/1,369.98
6. Step 6: Final answer
   x = 1,033.59