Finding the Fourth Proportional to 1,395.83, 1,926.19 and 836.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,395.83 : 1,926.19 = 836.61 : x
2. Step 2: Convert to fraction form
   1,395.83/1,926.19 = 836.61/x
3. Step 3: Cross multiply
   1,395.83x = 1,926.19 × 836.61
4. Step 4: Simplify right side
   1,395.83x = 1,611,469.77
5. Step 5: Solve for x
   x = 1,611,469.77/1,395.83
6. Step 6: Final answer
   x = 1,154.49