Finding the Fourth Proportional to 2,547.53, 3,821.50 and 1,086.70

Step by Step Solution

1. Step 1: Write the proportion equation
   2,547.53 : 3,821.50 = 1,086.70 : x
2. Step 2: Convert to fraction form
   2,547.53/3,821.50 = 1,086.70/x
3. Step 3: Cross multiply
   2,547.53x = 3,821.50 × 1,086.70
4. Step 4: Simplify right side
   2,547.53x = 4,152,799.51
5. Step 5: Solve for x
   x = 4,152,799.51/2,547.53
6. Step 6: Final answer
   x = 1,630.13