Finding the Fourth Proportional to 1,188.02, 1,778.18 and 1,145.22

Step by Step Solution

1. Step 1: Write the proportion equation
   1,188.02 : 1,778.18 = 1,145.22 : x
2. Step 2: Convert to fraction form
   1,188.02/1,778.18 = 1,145.22/x
3. Step 3: Cross multiply
   1,188.02x = 1,778.18 × 1,145.22
4. Step 4: Simplify right side
   1,188.02x = 2,036,401.57
5. Step 5: Solve for x
   x = 2,036,401.57/1,188.02
6. Step 6: Final answer
   x = 1,714.12