Finding the Fourth Proportional to 1,845.54, 2,765.79 and 978.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,845.54 : 2,765.79 = 978.12 : x
2. Step 2: Convert to fraction form
   1,845.54/2,765.79 = 978.12/x
3. Step 3: Cross multiply
   1,845.54x = 2,765.79 × 978.12
4. Step 4: Simplify right side
   1,845.54x = 2,705,274.51
5. Step 5: Solve for x
   x = 2,705,274.51/1,845.54
6. Step 6: Final answer
   x = 1,465.84