Finding the Fourth Proportional to 1,859.43, 2,566.37 and 1,229.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,859.43 : 2,566.37 = 1,229.98 : x
2. Step 2: Convert to fraction form
   1,859.43/2,566.37 = 1,229.98/x
3. Step 3: Cross multiply
   1,859.43x = 2,566.37 × 1,229.98
4. Step 4: Simplify right side
   1,859.43x = 3,156,583.77
5. Step 5: Solve for x
   x = 3,156,583.77/1,859.43
6. Step 6: Final answer
   x = 1,697.61