Finding the Fourth Proportional to 3,517.12, 5,274.89 and 1,051.61

Step by Step Solution

1. Step 1: Write the proportion equation
   3,517.12 : 5,274.89 = 1,051.61 : x
2. Step 2: Convert to fraction form
   3,517.12/5,274.89 = 1,051.61/x
3. Step 3: Cross multiply
   3,517.12x = 5,274.89 × 1,051.61
4. Step 4: Simplify right side
   3,517.12x = 5,547,121.81
5. Step 5: Solve for x
   x = 5,547,121.81/3,517.12
6. Step 6: Final answer
   x = 1,577.18