Finding the Fourth Proportional to 3,427.60, 5,140.37 and 1,087.51

Step by Step Solution

1. Step 1: Write the proportion equation
   3,427.60 : 5,140.37 = 1,087.51 : x
2. Step 2: Convert to fraction form
   3,427.60/5,140.37 = 1,087.51/x
3. Step 3: Cross multiply
   3,427.60x = 5,140.37 × 1,087.51
4. Step 4: Simplify right side
   3,427.60x = 5,590,200.23
5. Step 5: Solve for x
   x = 5,590,200.23/3,427.60
6. Step 6: Final answer
   x = 1,630.94