Finding the Fourth Proportional to 1,820.17, 2,511.69 and 1,023.45

Step by Step Solution

1. Step 1: Write the proportion equation
   1,820.17 : 2,511.69 = 1,023.45 : x
2. Step 2: Convert to fraction form
   1,820.17/2,511.69 = 1,023.45/x
3. Step 3: Cross multiply
   1,820.17x = 2,511.69 × 1,023.45
4. Step 4: Simplify right side
   1,820.17x = 2,570,584.01
5. Step 5: Solve for x
   x = 2,570,584.01/1,820.17
6. Step 6: Final answer
   x = 1,412.28