Finding the Fourth Proportional to 1,807.72, 2,494.80 and 1,021.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,807.72 : 2,494.80 = 1,021.82 : x
2. Step 2: Convert to fraction form
   1,807.72/2,494.80 = 1,021.82/x
3. Step 3: Cross multiply
   1,807.72x = 2,494.80 × 1,021.82
4. Step 4: Simplify right side
   1,807.72x = 2,549,224.06
5. Step 5: Solve for x
   x = 2,549,224.06/1,807.72
6. Step 6: Final answer
   x = 1,410.19