Finding the Fourth Proportional to 1,372.52, 2,056.86 and 985.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,372.52 : 2,056.86 = 985.96 : x
2. Step 2: Convert to fraction form
   1,372.52/2,056.86 = 985.96/x
3. Step 3: Cross multiply
   1,372.52x = 2,056.86 × 985.96
4. Step 4: Simplify right side
   1,372.52x = 2,027,981.69
5. Step 5: Solve for x
   x = 2,027,981.69/1,372.52
6. Step 6: Final answer
   x = 1,477.56