Finding the Fourth Proportional to 2,191.60, 3,285.78 and 1,036

Step by Step Solution

1. Step 1: Write the proportion equation
   2,191.60 : 3,285.78 = 1,036 : x
2. Step 2: Convert to fraction form
   2,191.60/3,285.78 = 1,036/x
3. Step 3: Cross multiply
   2,191.60x = 3,285.78 × 1,036
4. Step 4: Simplify right side
   2,191.60x = 3,404,068.08
5. Step 5: Solve for x
   x = 3,404,068.08/2,191.60
6. Step 6: Final answer
   x = 1,553.23