Finding the Fourth Proportional to 1,848.31, 2,770.72 and 678.04

Step by Step Solution

1. Step 1: Write the proportion equation
   1,848.31 : 2,770.72 = 678.04 : x
2. Step 2: Convert to fraction form
   1,848.31/2,770.72 = 678.04/x
3. Step 3: Cross multiply
   1,848.31x = 2,770.72 × 678.04
4. Step 4: Simplify right side
   1,848.31x = 1,878,658.99
5. Step 5: Solve for x
   x = 1,878,658.99/1,848.31
6. Step 6: Final answer
   x = 1,016.42