Finding the Fourth Proportional to 2,073.51, 3,109.23 and 612.27

Step by Step Solution

1. Step 1: Write the proportion equation
   2,073.51 : 3,109.23 = 612.27 : x
2. Step 2: Convert to fraction form
   2,073.51/3,109.23 = 612.27/x
3. Step 3: Cross multiply
   2,073.51x = 3,109.23 × 612.27
4. Step 4: Simplify right side
   2,073.51x = 1,903,688.25
5. Step 5: Solve for x
   x = 1,903,688.25/2,073.51
6. Step 6: Final answer
   x = 918.10