Finding the Fourth Proportional to 1,888.81, 2,606.72 and 1,103.11

Step by Step Solution

1. Step 1: Write the proportion equation
   1,888.81 : 2,606.72 = 1,103.11 : x
2. Step 2: Convert to fraction form
   1,888.81/2,606.72 = 1,103.11/x
3. Step 3: Cross multiply
   1,888.81x = 2,606.72 × 1,103.11
4. Step 4: Simplify right side
   1,888.81x = 2,875,498.90
5. Step 5: Solve for x
   x = 2,875,498.90/1,888.81
6. Step 6: Final answer
   x = 1,522.39