Finding the Fourth Proportional to 1,499.40, 2,069.91 and 1,162.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,499.40 : 2,069.91 = 1,162.55 : x
2. Step 2: Convert to fraction form
   1,499.40/2,069.91 = 1,162.55/x
3. Step 3: Cross multiply
   1,499.40x = 2,069.91 × 1,162.55
4. Step 4: Simplify right side
   1,499.40x = 2,406,379.05
5. Step 5: Solve for x
   x = 2,406,379.05/1,499.40
6. Step 6: Final answer
   x = 1,604.89