Finding the Fourth Proportional to 3,887.98, 5,822.65 and 2,130.34

Step by Step Solution

1. Step 1: Write the proportion equation
   3,887.98 : 5,822.65 = 2,130.34 : x
2. Step 2: Convert to fraction form
   3,887.98/5,822.65 = 2,130.34/x
3. Step 3: Cross multiply
   3,887.98x = 5,822.65 × 2,130.34
4. Step 4: Simplify right side
   3,887.98x = 12,404,224.20
5. Step 5: Solve for x
   x = 12,404,224.20/3,887.98
6. Step 6: Final answer
   x = 3,190.40