Finding the Fourth Proportional to 1,807.84, 2,713.59 and 1,221.00

Step by Step Solution

1. Step 1: Write the proportion equation
   1,807.84 : 2,713.59 = 1,221.00 : x
2. Step 2: Convert to fraction form
   1,807.84/2,713.59 = 1,221.00/x
3. Step 3: Cross multiply
   1,807.84x = 2,713.59 × 1,221.00
4. Step 4: Simplify right side
   1,807.84x = 3,313,273.72
5. Step 5: Solve for x
   x = 3,313,273.72/1,807.84
6. Step 6: Final answer
   x = 1,832.73