Finding the Fourth Proportional to 1,395.40, 1,924.98 and 835.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,395.40 : 1,924.98 = 835.72 : x
2. Step 2: Convert to fraction form
   1,395.40/1,924.98 = 835.72/x
3. Step 3: Cross multiply
   1,395.40x = 1,924.98 × 835.72
4. Step 4: Simplify right side
   1,395.40x = 1,608,744.29
5. Step 5: Solve for x
   x = 1,608,744.29/1,395.40
6. Step 6: Final answer
   x = 1,152.89