Finding the Fourth Proportional to 1,410.98, 1,947.13 and 789.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,410.98 : 1,947.13 = 789.98 : x
2. Step 2: Convert to fraction form
   1,410.98/1,947.13 = 789.98/x
3. Step 3: Cross multiply
   1,410.98x = 1,947.13 × 789.98
4. Step 4: Simplify right side
   1,410.98x = 1,538,193.76
5. Step 5: Solve for x
   x = 1,538,193.76/1,410.98
6. Step 6: Final answer
   x = 1,090.16