Finding the Fourth Proportional to 1,382.45, 1,907.78 and 752.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,382.45 : 1,907.78 = 752.98 : x
2. Step 2: Convert to fraction form
   1,382.45/1,907.78 = 752.98/x
3. Step 3: Cross multiply
   1,382.45x = 1,907.78 × 752.98
4. Step 4: Simplify right side
   1,382.45x = 1,436,516.42
5. Step 5: Solve for x
   x = 1,436,516.42/1,382.45
6. Step 6: Final answer
   x = 1,039.11