Finding the Fourth Proportional to 1,487.31, 2,051.90 and 956.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,487.31 : 2,051.90 = 956.12 : x
2. Step 2: Convert to fraction form
   1,487.31/2,051.90 = 956.12/x
3. Step 3: Cross multiply
   1,487.31x = 2,051.90 × 956.12
4. Step 4: Simplify right side
   1,487.31x = 1,961,847.59
5. Step 5: Solve for x
   x = 1,961,847.59/1,487.31
6. Step 6: Final answer
   x = 1,319.06