Finding the Fourth Proportional to 1,499.85, 2,069.76 and 836.64

Step by Step Solution

1. Step 1: Write the proportion equation
   1,499.85 : 2,069.76 = 836.64 : x
2. Step 2: Convert to fraction form
   1,499.85/2,069.76 = 836.64/x
3. Step 3: Cross multiply
   1,499.85x = 2,069.76 × 836.64
4. Step 4: Simplify right side
   1,499.85x = 1,731,644.01
5. Step 5: Solve for x
   x = 1,731,644.01/1,499.85
6. Step 6: Final answer
   x = 1,154.54