Finding the Fourth Proportional to 1,845.51, 2,767.59 and 612.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,845.51 : 2,767.59 = 612.69 : x
2. Step 2: Convert to fraction form
   1,845.51/2,767.59 = 612.69/x
3. Step 3: Cross multiply
   1,845.51x = 2,767.59 × 612.69
4. Step 4: Simplify right side
   1,845.51x = 1,695,674.72
5. Step 5: Solve for x
   x = 1,695,674.72/1,845.51
6. Step 6: Final answer
   x = 918.81