Finding the Fourth Proportional to 1,897.88, 2,845.05 and 971.39

Step by Step Solution

1. Step 1: Write the proportion equation
   1,897.88 : 2,845.05 = 971.39 : x
2. Step 2: Convert to fraction form
   1,897.88/2,845.05 = 971.39/x
3. Step 3: Cross multiply
   1,897.88x = 2,845.05 × 971.39
4. Step 4: Simplify right side
   1,897.88x = 2,763,638.89
5. Step 5: Solve for x
   x = 2,763,638.89/1,897.88
6. Step 6: Final answer
   x = 1,456.18