Finding the Fourth Proportional to 1,189.27, 1,779.24 and 1,050.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,189.27 : 1,779.24 = 1,050.76 : x
2. Step 2: Convert to fraction form
   1,189.27/1,779.24 = 1,050.76/x
3. Step 3: Cross multiply
   1,189.27x = 1,779.24 × 1,050.76
4. Step 4: Simplify right side
   1,189.27x = 1,869,554.22
5. Step 5: Solve for x
   x = 1,869,554.22/1,189.27
6. Step 6: Final answer
   x = 1,572.02