Finding the Fourth Proportional to 1,395.48, 1,925.78 and 798.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,395.48 : 1,925.78 = 798.10 : x
2. Step 2: Convert to fraction form
   1,395.48/1,925.78 = 798.10/x
3. Step 3: Cross multiply
   1,395.48x = 1,925.78 × 798.10
4. Step 4: Simplify right side
   1,395.48x = 1,536,965.02
5. Step 5: Solve for x
   x = 1,536,965.02/1,395.48
6. Step 6: Final answer
   x = 1,101.39