Finding the Fourth Proportional to 2,547.90, 3,820.20 and 1,068.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,547.90 : 3,820.20 = 1,068.15 : x
2. Step 2: Convert to fraction form
   2,547.90/3,820.20 = 1,068.15/x
3. Step 3: Cross multiply
   2,547.90x = 3,820.20 × 1,068.15
4. Step 4: Simplify right side
   2,547.90x = 4,080,546.63
5. Step 5: Solve for x
   x = 4,080,546.63/2,547.90
6. Step 6: Final answer
   x = 1,601.53