Finding the Fourth Proportional to 2,900.86, 4,002.51 and 1,958.41

Step by Step Solution

1. Step 1: Write the proportion equation
   2,900.86 : 4,002.51 = 1,958.41 : x
2. Step 2: Convert to fraction form
   2,900.86/4,002.51 = 1,958.41/x
3. Step 3: Cross multiply
   2,900.86x = 4,002.51 × 1,958.41
4. Step 4: Simplify right side
   2,900.86x = 7,838,555.61
5. Step 5: Solve for x
   x = 7,838,555.61/2,900.86
6. Step 6: Final answer
   x = 2,702.15