Finding the Fourth Proportional to 1,587.82, 2,189.07 and 1,090.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,587.82 : 2,189.07 = 1,090.27 : x
2. Step 2: Convert to fraction form
   1,587.82/2,189.07 = 1,090.27/x
3. Step 3: Cross multiply
   1,587.82x = 2,189.07 × 1,090.27
4. Step 4: Simplify right side
   1,587.82x = 2,386,677.35
5. Step 5: Solve for x
   x = 2,386,677.35/1,587.82
6. Step 6: Final answer
   x = 1,503.12