Finding the Fourth Proportional to 2,333.98, 3,219.46 and 1,389.14

Step by Step Solution

1. Step 1: Write the proportion equation
   2,333.98 : 3,219.46 = 1,389.14 : x
2. Step 2: Convert to fraction form
   2,333.98/3,219.46 = 1,389.14/x
3. Step 3: Cross multiply
   2,333.98x = 3,219.46 × 1,389.14
4. Step 4: Simplify right side
   2,333.98x = 4,472,264.57
5. Step 5: Solve for x
   x = 4,472,264.57/2,333.98
6. Step 6: Final answer
   x = 1,916.16