Finding the Fourth Proportional to 1,383.76, 2,071.59 and 1,372.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,383.76 : 2,071.59 = 1,372.83 : x
2. Step 2: Convert to fraction form
   1,383.76/2,071.59 = 1,372.83/x
3. Step 3: Cross multiply
   1,383.76x = 2,071.59 × 1,372.83
4. Step 4: Simplify right side
   1,383.76x = 2,843,940.90
5. Step 5: Solve for x
   x = 2,843,940.90/1,383.76
6. Step 6: Final answer
   x = 2,055.23