Finding the Fourth Proportional to 2,051.50, 3,078.51 and 1,078.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,051.50 : 3,078.51 = 1,078.30 : x
2. Step 2: Convert to fraction form
   2,051.50/3,078.51 = 1,078.30/x
3. Step 3: Cross multiply
   2,051.50x = 3,078.51 × 1,078.30
4. Step 4: Simplify right side
   2,051.50x = 3,319,557.33
5. Step 5: Solve for x
   x = 3,319,557.33/2,051.50
6. Step 6: Final answer
   x = 1,618.11