Finding the Fourth Proportional to 1,404.80, 2,111.40 and 1,162.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,404.80 : 2,111.40 = 1,162.88 : x
2. Step 2: Convert to fraction form
   1,404.80/2,111.40 = 1,162.88/x
3. Step 3: Cross multiply
   1,404.80x = 2,111.40 × 1,162.88
4. Step 4: Simplify right side
   1,404.80x = 2,455,304.83
5. Step 5: Solve for x
   x = 2,455,304.83/1,404.80
6. Step 6: Final answer
   x = 1,747.80