Finding the Fourth Proportional to 1,435.83, 1,980.83 and 838.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,435.83 : 1,980.83 = 838.27 : x
2. Step 2: Convert to fraction form
   1,435.83/1,980.83 = 838.27/x
3. Step 3: Cross multiply
   1,435.83x = 1,980.83 × 838.27
4. Step 4: Simplify right side
   1,435.83x = 1,660,478.15
5. Step 5: Solve for x
   x = 1,660,478.15/1,435.83
6. Step 6: Final answer
   x = 1,156.46