Finding the Fourth Proportional to 3,475.98, 5,211.72 and 1,284.12

Step by Step Solution

1. Step 1: Write the proportion equation
   3,475.98 : 5,211.72 = 1,284.12 : x
2. Step 2: Convert to fraction form
   3,475.98/5,211.72 = 1,284.12/x
3. Step 3: Cross multiply
   3,475.98x = 5,211.72 × 1,284.12
4. Step 4: Simplify right side
   3,475.98x = 6,692,473.89
5. Step 5: Solve for x
   x = 6,692,473.89/3,475.98
6. Step 6: Final answer
   x = 1,925.35