Finding the Fourth Proportional to 1,373.61, 1,892.63 and 930.74

Step by Step Solution

1. Step 1: Write the proportion equation
   1,373.61 : 1,892.63 = 930.74 : x
2. Step 2: Convert to fraction form
   1,373.61/1,892.63 = 930.74/x
3. Step 3: Cross multiply
   1,373.61x = 1,892.63 × 930.74
4. Step 4: Simplify right side
   1,373.61x = 1,761,532.33
5. Step 5: Solve for x
   x = 1,761,532.33/1,373.61
6. Step 6: Final answer
   x = 1,282.41