Finding the Fourth Proportional to 2,187.34, 3,018.77 and 1,347.87

Step by Step Solution

1. Step 1: Write the proportion equation
   2,187.34 : 3,018.77 = 1,347.87 : x
2. Step 2: Convert to fraction form
   2,187.34/3,018.77 = 1,347.87/x
3. Step 3: Cross multiply
   2,187.34x = 3,018.77 × 1,347.87
4. Step 4: Simplify right side
   2,187.34x = 4,068,909.52
5. Step 5: Solve for x
   x = 4,068,909.52/2,187.34
6. Step 6: Final answer
   x = 1,860.21