Finding the Fourth Proportional to 1,783.31, 2,676.18 and 1,071.53

Step by Step Solution

1. Step 1: Write the proportion equation
   1,783.31 : 2,676.18 = 1,071.53 : x
2. Step 2: Convert to fraction form
   1,783.31/2,676.18 = 1,071.53/x
3. Step 3: Cross multiply
   1,783.31x = 2,676.18 × 1,071.53
4. Step 4: Simplify right side
   1,783.31x = 2,867,607.16
5. Step 5: Solve for x
   x = 2,867,607.16/1,783.31
6. Step 6: Final answer
   x = 1,608.03