Finding the Fourth Proportional to 1,883.31, 2,822.98 and 786.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,883.31 : 2,822.98 = 786.15 : x
2. Step 2: Convert to fraction form
   1,883.31/2,822.98 = 786.15/x
3. Step 3: Cross multiply
   1,883.31x = 2,822.98 × 786.15
4. Step 4: Simplify right side
   1,883.31x = 2,219,285.73
5. Step 5: Solve for x
   x = 2,219,285.73/1,883.31
6. Step 6: Final answer
   x = 1,178.40