Finding the Fourth Proportional to 2,870.02, 3,961.23 and 1,691.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,870.02 : 3,961.23 = 1,691.50 : x
2. Step 2: Convert to fraction form
   2,870.02/3,961.23 = 1,691.50/x
3. Step 3: Cross multiply
   2,870.02x = 3,961.23 × 1,691.50
4. Step 4: Simplify right side
   2,870.02x = 6,700,420.55
5. Step 5: Solve for x
   x = 6,700,420.55/2,870.02
6. Step 6: Final answer
   x = 2,334.63