Finding the Fourth Proportional to 1,813.89, 2,503.38 and 1,106.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,813.89 : 2,503.38 = 1,106.15 : x
2. Step 2: Convert to fraction form
   1,813.89/2,503.38 = 1,106.15/x
3. Step 3: Cross multiply
   1,813.89x = 2,503.38 × 1,106.15
4. Step 4: Simplify right side
   1,813.89x = 2,769,101.27
5. Step 5: Solve for x
   x = 2,769,101.27/1,813.89
6. Step 6: Final answer
   x = 1,526.61