Finding the Fourth Proportional to 1,499.64, 2,069.55 and 836.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,499.64 : 2,069.55 = 836.55 : x
2. Step 2: Convert to fraction form
   1,499.64/2,069.55 = 836.55/x
3. Step 3: Cross multiply
   1,499.64x = 2,069.55 × 836.55
4. Step 4: Simplify right side
   1,499.64x = 1,731,282.05
5. Step 5: Solve for x
   x = 1,731,282.05/1,499.64
6. Step 6: Final answer
   x = 1,154.47