Finding the Fourth Proportional to 1,820.81, 2,512.72 and 1,034.91

Step by Step Solution

1. Step 1: Write the proportion equation
   1,820.81 : 2,512.72 = 1,034.91 : x
2. Step 2: Convert to fraction form
   1,820.81/2,512.72 = 1,034.91/x
3. Step 3: Cross multiply
   1,820.81x = 2,512.72 × 1,034.91
4. Step 4: Simplify right side
   1,820.81x = 2,600,440.35
5. Step 5: Solve for x
   x = 2,600,440.35/1,820.81
6. Step 6: Final answer
   x = 1,428.18