Finding the Fourth Proportional to 1,487.88, 2,218.71 and 1,383.99

Step by Step Solution

1. Step 1: Write the proportion equation
   1,487.88 : 2,218.71 = 1,383.99 : x
2. Step 2: Convert to fraction form
   1,487.88/2,218.71 = 1,383.99/x
3. Step 3: Cross multiply
   1,487.88x = 2,218.71 × 1,383.99
4. Step 4: Simplify right side
   1,487.88x = 3,070,672.45
5. Step 5: Solve for x
   x = 3,070,672.45/1,487.88
6. Step 6: Final answer
   x = 2,063.79