Finding the Fourth Proportional to 1,807.63, 2,495.12 and 1,061.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,807.63 : 2,495.12 = 1,061.57 : x
2. Step 2: Convert to fraction form
   1,807.63/2,495.12 = 1,061.57/x
3. Step 3: Cross multiply
   1,807.63x = 2,495.12 × 1,061.57
4. Step 4: Simplify right side
   1,807.63x = 2,648,739.23
5. Step 5: Solve for x
   x = 2,648,739.23/1,807.63
6. Step 6: Final answer
   x = 1,465.31