Finding the Fourth Proportional to 2,100.98, 3,150.97 and 930.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,100.98 : 3,150.97 = 930.34 : x
2. Step 2: Convert to fraction form
   2,100.98/3,150.97 = 930.34/x
3. Step 3: Cross multiply
   2,100.98x = 3,150.97 × 930.34
4. Step 4: Simplify right side
   2,100.98x = 2,931,463.23
5. Step 5: Solve for x
   x = 2,931,463.23/2,100.98
6. Step 6: Final answer
   x = 1,395.28