Finding the Fourth Proportional to 1,817.79, 2,507.86 and 1,109.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,817.79 : 2,507.86 = 1,109.38 : x
2. Step 2: Convert to fraction form
   1,817.79/2,507.86 = 1,109.38/x
3. Step 3: Cross multiply
   1,817.79x = 2,507.86 × 1,109.38
4. Step 4: Simplify right side
   1,817.79x = 2,782,169.73
5. Step 5: Solve for x
   x = 2,782,169.73/1,817.79
6. Step 6: Final answer
   x = 1,530.52