Finding the Fourth Proportional to 1,611.62, 2,218.88 and 1,404.53

Step by Step Solution

1. Step 1: Write the proportion equation
   1,611.62 : 2,218.88 = 1,404.53 : x
2. Step 2: Convert to fraction form
   1,611.62/2,218.88 = 1,404.53/x
3. Step 3: Cross multiply
   1,611.62x = 2,218.88 × 1,404.53
4. Step 4: Simplify right side
   1,611.62x = 3,116,465.41
5. Step 5: Solve for x
   x = 3,116,465.41/1,611.62
6. Step 6: Final answer
   x = 1,933.75