Finding the Fourth Proportional to 1,741.30, 2,611.59 and 816.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,741.30 : 2,611.59 = 816.61 : x
2. Step 2: Convert to fraction form
   1,741.30/2,611.59 = 816.61/x
3. Step 3: Cross multiply
   1,741.30x = 2,611.59 × 816.61
4. Step 4: Simplify right side
   1,741.30x = 2,132,650.51
5. Step 5: Solve for x
   x = 2,132,650.51/1,741.30
6. Step 6: Final answer
   x = 1,224.75