Finding the Fourth Proportional to 2,436.68, 3,355.54 and 2,117.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,436.68 : 3,355.54 = 2,117.50 : x
2. Step 2: Convert to fraction form
   2,436.68/3,355.54 = 2,117.50/x
3. Step 3: Cross multiply
   2,436.68x = 3,355.54 × 2,117.50
4. Step 4: Simplify right side
   2,436.68x = 7,105,368.84
5. Step 5: Solve for x
   x = 7,105,368.84/2,436.68
6. Step 6: Final answer
   x = 2,916.00