Finding the Fourth Proportional to 1,807.61, 2,494.23 and 1,010.90

Step by Step Solution

1. Step 1: Write the proportion equation
   1,807.61 : 2,494.23 = 1,010.90 : x
2. Step 2: Convert to fraction form
   1,807.61/2,494.23 = 1,010.90/x
3. Step 3: Cross multiply
   1,807.61x = 2,494.23 × 1,010.90
4. Step 4: Simplify right side
   1,807.61x = 2,521,404.64
5. Step 5: Solve for x
   x = 2,521,404.64/1,807.61
6. Step 6: Final answer
   x = 1,394.89