Finding the Fourth Proportional to 1,188.05, 1,790.18 and 976.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,188.05 : 1,790.18 = 976.37 : x
2. Step 2: Convert to fraction form
   1,188.05/1,790.18 = 976.37/x
3. Step 3: Cross multiply
   1,188.05x = 1,790.18 × 976.37
4. Step 4: Simplify right side
   1,188.05x = 1,747,867.88
5. Step 5: Solve for x
   x = 1,747,867.88/1,188.05
6. Step 6: Final answer
   x = 1,471.21