Finding the Fourth Proportional to 1,673.61, 2,309.47 and 927.51

Step by Step Solution

1. Step 1: Write the proportion equation
   1,673.61 : 2,309.47 = 927.51 : x
2. Step 2: Convert to fraction form
   1,673.61/2,309.47 = 927.51/x
3. Step 3: Cross multiply
   1,673.61x = 2,309.47 × 927.51
4. Step 4: Simplify right side
   1,673.61x = 2,142,056.52
5. Step 5: Solve for x
   x = 2,142,056.52/1,673.61
6. Step 6: Final answer
   x = 1,279.90