Finding the Fourth Proportional to 2,654.61, 3,981.79 and 1,074.01

Step by Step Solution

1. Step 1: Write the proportion equation
   2,654.61 : 3,981.79 = 1,074.01 : x
2. Step 2: Convert to fraction form
   2,654.61/3,981.79 = 1,074.01/x
3. Step 3: Cross multiply
   2,654.61x = 3,981.79 × 1,074.01
4. Step 4: Simplify right side
   2,654.61x = 4,276,482.28
5. Step 5: Solve for x
   x = 4,276,482.28/2,654.61
6. Step 6: Final answer
   x = 1,610.96