Finding the Fourth Proportional to 1,412.13, 1,944.22 and 1,131.33

Step by Step Solution

1. Step 1: Write the proportion equation
   1,412.13 : 1,944.22 = 1,131.33 : x
2. Step 2: Convert to fraction form
   1,412.13/1,944.22 = 1,131.33/x
3. Step 3: Cross multiply
   1,412.13x = 1,944.22 × 1,131.33
4. Step 4: Simplify right side
   1,412.13x = 2,199,554.41
5. Step 5: Solve for x
   x = 2,199,554.41/1,412.13
6. Step 6: Final answer
   x = 1,557.61