Finding the Fourth Proportional to 1,340.13, 1,851.03 and 1,131.03

Step by Step Solution

1. Step 1: Write the proportion equation
   1,340.13 : 1,851.03 = 1,131.03 : x
2. Step 2: Convert to fraction form
   1,340.13/1,851.03 = 1,131.03/x
3. Step 3: Cross multiply
   1,340.13x = 1,851.03 × 1,131.03
4. Step 4: Simplify right side
   1,340.13x = 2,093,570.46
5. Step 5: Solve for x
   x = 2,093,570.46/1,340.13
6. Step 6: Final answer
   x = 1,562.21