Finding the Fourth Proportional to 1,907.02, 2,860.72 and 752.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,907.02 : 2,860.72 = 752.50 : x
2. Step 2: Convert to fraction form
   1,907.02/2,860.72 = 752.50/x
3. Step 3: Cross multiply
   1,907.02x = 2,860.72 × 752.50
4. Step 4: Simplify right side
   1,907.02x = 2,152,691.80
5. Step 5: Solve for x
   x = 2,152,691.80/1,907.02
6. Step 6: Final answer
   x = 1,128.82