Finding the Fourth Proportional to 1,490.86, 2,056.53 and 930.35

Step by Step Solution

1. Step 1: Write the proportion equation
   1,490.86 : 2,056.53 = 930.35 : x
2. Step 2: Convert to fraction form
   1,490.86/2,056.53 = 930.35/x
3. Step 3: Cross multiply
   1,490.86x = 2,056.53 × 930.35
4. Step 4: Simplify right side
   1,490.86x = 1,913,288.03
5. Step 5: Solve for x
   x = 1,913,288.03/1,490.86
6. Step 6: Final answer
   x = 1,283.35