Finding the Fourth Proportional to 1,612.04, 2,221.98 and 1,087.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,612.04 : 2,221.98 = 1,087.16 : x
2. Step 2: Convert to fraction form
   1,612.04/2,221.98 = 1,087.16/x
3. Step 3: Cross multiply
   1,612.04x = 2,221.98 × 1,087.16
4. Step 4: Simplify right side
   1,612.04x = 2,415,647.78
5. Step 5: Solve for x
   x = 2,415,647.78/1,612.04
6. Step 6: Final answer
   x = 1,498.50