Finding the Fourth Proportional to 1,888.86, 2,606.23 and 1,142.67

Step by Step Solution

1. Step 1: Write the proportion equation
   1,888.86 : 2,606.23 = 1,142.67 : x
2. Step 2: Convert to fraction form
   1,888.86/2,606.23 = 1,142.67/x
3. Step 3: Cross multiply
   1,888.86x = 2,606.23 × 1,142.67
4. Step 4: Simplify right side
   1,888.86x = 2,978,060.83
5. Step 5: Solve for x
   x = 2,978,060.83/1,888.86
6. Step 6: Final answer
   x = 1,576.64