Finding the Fourth Proportional to 1,564.98, 2,148.17 and 1,383.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,564.98 : 2,148.17 = 1,383.98 : x
2. Step 2: Convert to fraction form
   1,564.98/2,148.17 = 1,383.98/x
3. Step 3: Cross multiply
   1,564.98x = 2,148.17 × 1,383.98
4. Step 4: Simplify right side
   1,564.98x = 2,973,024.32
5. Step 5: Solve for x
   x = 2,973,024.32/1,564.98
6. Step 6: Final answer
   x = 1,899.72