Finding the Fourth Proportional to 2,087.61, 3,132.10 and 1,113.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,087.61 : 3,132.10 = 1,113.48 : x
2. Step 2: Convert to fraction form
   2,087.61/3,132.10 = 1,113.48/x
3. Step 3: Cross multiply
   2,087.61x = 3,132.10 × 1,113.48
4. Step 4: Simplify right side
   2,087.61x = 3,487,530.71
5. Step 5: Solve for x
   x = 3,487,530.71/2,087.61
6. Step 6: Final answer
   x = 1,670.59