Finding the Fourth Proportional to 2,659.67, 3,670.43 and 1,611.13

Step by Step Solution

1. Step 1: Write the proportion equation
   2,659.67 : 3,670.43 = 1,611.13 : x
2. Step 2: Convert to fraction form
   2,659.67/3,670.43 = 1,611.13/x
3. Step 3: Cross multiply
   2,659.67x = 3,670.43 × 1,611.13
4. Step 4: Simplify right side
   2,659.67x = 5,913,539.89
5. Step 5: Solve for x
   x = 5,913,539.89/2,659.67
6. Step 6: Final answer
   x = 2,223.41