Finding the Fourth Proportional to 1,859.34, 2,784.32 and 1,118.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,859.34 : 2,784.32 = 1,118.55 : x
2. Step 2: Convert to fraction form
   1,859.34/2,784.32 = 1,118.55/x
3. Step 3: Cross multiply
   1,859.34x = 2,784.32 × 1,118.55
4. Step 4: Simplify right side
   1,859.34x = 3,114,401.14
5. Step 5: Solve for x
   x = 3,114,401.14/1,859.34
6. Step 6: Final answer
   x = 1,675.00