Finding the Fourth Proportional to 2,287.51, 3,156.63 and 1,403.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,287.51 : 3,156.63 = 1,403.12 : x
2. Step 2: Convert to fraction form
   2,287.51/3,156.63 = 1,403.12/x
3. Step 3: Cross multiply
   2,287.51x = 3,156.63 × 1,403.12
4. Step 4: Simplify right side
   2,287.51x = 4,429,130.69
5. Step 5: Solve for x
   x = 4,429,130.69/2,287.51
6. Step 6: Final answer
   x = 1,936.22