Finding the Fourth Proportional to 1,218.82, 1,830.06 and 699.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,218.82 : 1,830.06 = 699.42 : x
2. Step 2: Convert to fraction form
   1,218.82/1,830.06 = 699.42/x
3. Step 3: Cross multiply
   1,218.82x = 1,830.06 × 699.42
4. Step 4: Simplify right side
   1,218.82x = 1,279,980.57
5. Step 5: Solve for x
   x = 1,279,980.57/1,218.82
6. Step 6: Final answer
   x = 1,050.18