Finding the Fourth Proportional to 1,697.90, 2,541.98 and 1,561.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,697.90 : 2,541.98 = 1,561.82 : x
2. Step 2: Convert to fraction form
   1,697.90/2,541.98 = 1,561.82/x
3. Step 3: Cross multiply
   1,697.90x = 2,541.98 × 1,561.82
4. Step 4: Simplify right side
   1,697.90x = 3,970,106.40
5. Step 5: Solve for x
   x = 3,970,106.40/1,697.90
6. Step 6: Final answer
   x = 2,338.25