Finding the Fourth Proportional to 1,888.88, 2,606.78 and 1,142.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,888.88 : 2,606.78 = 1,142.86 : x
2. Step 2: Convert to fraction form
   1,888.88/2,606.78 = 1,142.86/x
3. Step 3: Cross multiply
   1,888.88x = 2,606.78 × 1,142.86
4. Step 4: Simplify right side
   1,888.88x = 2,979,184.59
5. Step 5: Solve for x
   x = 2,979,184.59/1,888.88
6. Step 6: Final answer
   x = 1,577.22