Finding the Fourth Proportional to 1,395.99, 1,926.05 and 836.19

Step by Step Solution

1. Step 1: Write the proportion equation
   1,395.99 : 1,926.05 = 836.19 : x
2. Step 2: Convert to fraction form
   1,395.99/1,926.05 = 836.19/x
3. Step 3: Cross multiply
   1,395.99x = 1,926.05 × 836.19
4. Step 4: Simplify right side
   1,395.99x = 1,610,539.57
5. Step 5: Solve for x
   x = 1,610,539.57/1,395.99
6. Step 6: Final answer
   x = 1,153.69