Finding the Fourth Proportional to 1,603.87, 2,212.72 and 940.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,603.87 : 2,212.72 = 940.48 : x
2. Step 2: Convert to fraction form
   1,603.87/2,212.72 = 940.48/x
3. Step 3: Cross multiply
   1,603.87x = 2,212.72 × 940.48
4. Step 4: Simplify right side
   1,603.87x = 2,081,018.91
5. Step 5: Solve for x
   x = 2,081,018.91/1,603.87
6. Step 6: Final answer
   x = 1,297.50