Finding the Fourth Proportional to 1,740.83, 2,611.10 and 816.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,740.83 : 2,611.10 = 816.15 : x
2. Step 2: Convert to fraction form
   1,740.83/2,611.10 = 816.15/x
3. Step 3: Cross multiply
   1,740.83x = 2,611.10 × 816.15
4. Step 4: Simplify right side
   1,740.83x = 2,131,034.17
5. Step 5: Solve for x
   x = 2,131,034.17/1,740.83
6. Step 6: Final answer
   x = 1,224.15