Finding the Fourth Proportional to 1,499.35, 2,069.11 and 836.21

Step by Step Solution

1. Step 1: Write the proportion equation
   1,499.35 : 2,069.11 = 836.21 : x
2. Step 2: Convert to fraction form
   1,499.35/2,069.11 = 836.21/x
3. Step 3: Cross multiply
   1,499.35x = 2,069.11 × 836.21
4. Step 4: Simplify right side
   1,499.35x = 1,730,210.47
5. Step 5: Solve for x
   x = 1,730,210.47/1,499.35
6. Step 6: Final answer
   x = 1,153.97