Finding the Fourth Proportional to 1,947.98, 2,688.29 and 1,108.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,947.98 : 2,688.29 = 1,108.83 : x
2. Step 2: Convert to fraction form
   1,947.98/2,688.29 = 1,108.83/x
3. Step 3: Cross multiply
   1,947.98x = 2,688.29 × 1,108.83
4. Step 4: Simplify right side
   1,947.98x = 2,980,850.17
5. Step 5: Solve for x
   x = 2,980,850.17/1,947.98
6. Step 6: Final answer
   x = 1,530.23