Finding the Fourth Proportional to 1,499.47, 2,069.21 and 836.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,499.47 : 2,069.21 = 836.30 : x
2. Step 2: Convert to fraction form
   1,499.47/2,069.21 = 836.30/x
3. Step 3: Cross multiply
   1,499.47x = 2,069.21 × 836.30
4. Step 4: Simplify right side
   1,499.47x = 1,730,481.31
5. Step 5: Solve for x
   x = 1,730,481.31/1,499.47
6. Step 6: Final answer
   x = 1,154.06