Finding the Fourth Proportional to 1,499.57, 2,069.40 and 836.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,499.57 : 2,069.40 = 836.42 : x
2. Step 2: Convert to fraction form
   1,499.57/2,069.40 = 836.42/x
3. Step 3: Cross multiply
   1,499.57x = 2,069.40 × 836.42
4. Step 4: Simplify right side
   1,499.57x = 1,730,887.55
5. Step 5: Solve for x
   x = 1,730,887.55/1,499.57
6. Step 6: Final answer
   x = 1,154.26