Finding the Fourth Proportional to 1,818.81, 2,510.24 and 1,111.07

Step by Step Solution

1. Step 1: Write the proportion equation
   1,818.81 : 2,510.24 = 1,111.07 : x
2. Step 2: Convert to fraction form
   1,818.81/2,510.24 = 1,111.07/x
3. Step 3: Cross multiply
   1,818.81x = 2,510.24 × 1,111.07
4. Step 4: Simplify right side
   1,818.81x = 2,789,034.25
5. Step 5: Solve for x
   x = 2,789,034.25/1,818.81
6. Step 6: Final answer
   x = 1,533.44