Finding the Fourth Proportional to 1,611.32, 2,222.18 and 1,088.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,611.32 : 2,222.18 = 1,088.06 : x
2. Step 2: Convert to fraction form
   1,611.32/2,222.18 = 1,088.06/x
3. Step 3: Cross multiply
   1,611.32x = 2,222.18 × 1,088.06
4. Step 4: Simplify right side
   1,611.32x = 2,417,848.62
5. Step 5: Solve for x
   x = 2,417,848.62/1,611.32
6. Step 6: Final answer
   x = 1,500.54