Finding the Fourth Proportional to 2,611.90, 3,604.17 and 1,563.94

Step by Step Solution

1. Step 1: Write the proportion equation
   2,611.90 : 3,604.17 = 1,563.94 : x
2. Step 2: Convert to fraction form
   2,611.90/3,604.17 = 1,563.94/x
3. Step 3: Cross multiply
   2,611.90x = 3,604.17 × 1,563.94
4. Step 4: Simplify right side
   2,611.90x = 5,636,705.63
5. Step 5: Solve for x
   x = 5,636,705.63/2,611.90
6. Step 6: Final answer
   x = 2,158.09