Finding the Fourth Proportional to 1,185.87, 1,778.55 and 1,127.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,185.87 : 1,778.55 = 1,127.34 : x
2. Step 2: Convert to fraction form
   1,185.87/1,778.55 = 1,127.34/x
3. Step 3: Cross multiply
   1,185.87x = 1,778.55 × 1,127.34
4. Step 4: Simplify right side
   1,185.87x = 2,005,030.56
5. Step 5: Solve for x
   x = 2,005,030.56/1,185.87
6. Step 6: Final answer
   x = 1,690.77