Finding the Fourth Proportional to 1,839.51, 2,537.78 and 1,131.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,839.51 : 2,537.78 = 1,131.12 : x
2. Step 2: Convert to fraction form
   1,839.51/2,537.78 = 1,131.12/x
3. Step 3: Cross multiply
   1,839.51x = 2,537.78 × 1,131.12
4. Step 4: Simplify right side
   1,839.51x = 2,870,541.82
5. Step 5: Solve for x
   x = 2,870,541.82/1,839.51
6. Step 6: Final answer
   x = 1,560.50