Finding the Fourth Proportional to 1,395.28, 1,925.52 and 836.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,395.28 : 1,925.52 = 836.34 : x
2. Step 2: Convert to fraction form
   1,395.28/1,925.52 = 836.34/x
3. Step 3: Cross multiply
   1,395.28x = 1,925.52 × 836.34
4. Step 4: Simplify right side
   1,395.28x = 1,610,384.58
5. Step 5: Solve for x
   x = 1,610,384.58/1,395.28
6. Step 6: Final answer
   x = 1,154.16