Finding the Fourth Proportional to 1,605.88, 2,214.89 and 1,109.35

Step by Step Solution

1. Step 1: Write the proportion equation
   1,605.88 : 2,214.89 = 1,109.35 : x
2. Step 2: Convert to fraction form
   1,605.88/2,214.89 = 1,109.35/x
3. Step 3: Cross multiply
   1,605.88x = 2,214.89 × 1,109.35
4. Step 4: Simplify right side
   1,605.88x = 2,457,077.15
5. Step 5: Solve for x
   x = 2,457,077.15/1,605.88
6. Step 6: Final answer
   x = 1,530.06