Finding the Fourth Proportional to 1,951.63, 2,902.35 and 1,890.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,951.63 : 2,902.35 = 1,890.12 : x
2. Step 2: Convert to fraction form
   1,951.63/2,902.35 = 1,890.12/x
3. Step 3: Cross multiply
   1,951.63x = 2,902.35 × 1,890.12
4. Step 4: Simplify right side
   1,951.63x = 5,485,789.78
5. Step 5: Solve for x
   x = 5,485,789.78/1,951.63
6. Step 6: Final answer
   x = 2,810.88