Finding the Fourth Proportional to 3,612.52, 5,417.82 and 1,420.84

Step by Step Solution

1. Step 1: Write the proportion equation
   3,612.52 : 5,417.82 = 1,420.84 : x
2. Step 2: Convert to fraction form
   3,612.52/5,417.82 = 1,420.84/x
3. Step 3: Cross multiply
   3,612.52x = 5,417.82 × 1,420.84
4. Step 4: Simplify right side
   3,612.52x = 7,697,855.37
5. Step 5: Solve for x
   x = 7,697,855.37/3,612.52
6. Step 6: Final answer
   x = 2,130.88