Finding the Fourth Proportional to 1,661.18, 2,492.70 and 1,418.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,661.18 : 2,492.70 = 1,418.82 : x
2. Step 2: Convert to fraction form
   1,661.18/2,492.70 = 1,418.82/x
3. Step 3: Cross multiply
   1,661.18x = 2,492.70 × 1,418.82
4. Step 4: Simplify right side
   1,661.18x = 3,536,692.61
5. Step 5: Solve for x
   x = 3,536,692.61/1,661.18
6. Step 6: Final answer
   x = 2,129.02