Finding the Fourth Proportional to 1,971.55, 2,720.71 and 1,087.35

Step by Step Solution

1. Step 1: Write the proportion equation
   1,971.55 : 2,720.71 = 1,087.35 : x
2. Step 2: Convert to fraction form
   1,971.55/2,720.71 = 1,087.35/x
3. Step 3: Cross multiply
   1,971.55x = 2,720.71 × 1,087.35
4. Step 4: Simplify right side
   1,971.55x = 2,958,364.02
5. Step 5: Solve for x
   x = 2,958,364.02/1,971.55
6. Step 6: Final answer
   x = 1,500.53