Finding the Fourth Proportional to 1,478.98, 2,215.42 and 1,411.35

Step by Step Solution

1. Step 1: Write the proportion equation
   1,478.98 : 2,215.42 = 1,411.35 : x
2. Step 2: Convert to fraction form
   1,478.98/2,215.42 = 1,411.35/x
3. Step 3: Cross multiply
   1,478.98x = 2,215.42 × 1,411.35
4. Step 4: Simplify right side
   1,478.98x = 3,126,733.02
5. Step 5: Solve for x
   x = 3,126,733.02/1,478.98
6. Step 6: Final answer
   x = 2,114.11