Finding the Fourth Proportional to 2,887.39, 4,328.34 and 938.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,887.39 : 4,328.34 = 938.32 : x
2. Step 2: Convert to fraction form
   2,887.39/4,328.34 = 938.32/x
3. Step 3: Cross multiply
   2,887.39x = 4,328.34 × 938.32
4. Step 4: Simplify right side
   2,887.39x = 4,061,367.99
5. Step 5: Solve for x
   x = 4,061,367.99/2,887.39
6. Step 6: Final answer
   x = 1,406.59