Finding the Fourth Proportional to 1,381.95, 1,907.06 and 752.49

Step by Step Solution

1. Step 1: Write the proportion equation
   1,381.95 : 1,907.06 = 752.49 : x
2. Step 2: Convert to fraction form
   1,381.95/1,907.06 = 752.49/x
3. Step 3: Cross multiply
   1,381.95x = 1,907.06 × 752.49
4. Step 4: Simplify right side
   1,381.95x = 1,435,039.82
5. Step 5: Solve for x
   x = 1,435,039.82/1,381.95
6. Step 6: Final answer
   x = 1,038.42