Finding the Fourth Proportional to 1,642.31, 2,265.66 and 1,111.00

Step by Step Solution

1. Step 1: Write the proportion equation
   1,642.31 : 2,265.66 = 1,111.00 : x
2. Step 2: Convert to fraction form
   1,642.31/2,265.66 = 1,111.00/x
3. Step 3: Cross multiply
   1,642.31x = 2,265.66 × 1,111.00
4. Step 4: Simplify right side
   1,642.31x = 2,517,138.43
5. Step 5: Solve for x
   x = 2,517,138.43/1,642.31
6. Step 6: Final answer
   x = 1,532.69