Finding the Fourth Proportional to 1,903.86, 2,856.86 and 750.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,903.86 : 2,856.86 = 750.42 : x
2. Step 2: Convert to fraction form
   1,903.86/2,856.86 = 750.42/x
3. Step 3: Cross multiply
   1,903.86x = 2,856.86 × 750.42
4. Step 4: Simplify right side
   1,903.86x = 2,143,844.88
5. Step 5: Solve for x
   x = 2,143,844.88/1,903.86
6. Step 6: Final answer
   x = 1,126.05