Finding the Fourth Proportional to 1,395.20, 1,925.30 and 835.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,395.20 : 1,925.30 = 835.34 : x
2. Step 2: Convert to fraction form
   1,395.20/1,925.30 = 835.34/x
3. Step 3: Cross multiply
   1,395.20x = 1,925.30 × 835.34
4. Step 4: Simplify right side
   1,395.20x = 1,608,272.56
5. Step 5: Solve for x
   x = 1,608,272.56/1,395.20
6. Step 6: Final answer
   x = 1,152.72