Finding the Fourth Proportional to 1,011.93, 1,510.48 and 937.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,011.93 : 1,510.48 = 937.72 : x
2. Step 2: Convert to fraction form
   1,011.93/1,510.48 = 937.72/x
3. Step 3: Cross multiply
   1,011.93x = 1,510.48 × 937.72
4. Step 4: Simplify right side
   1,011.93x = 1,416,407.31
5. Step 5: Solve for x
   x = 1,416,407.31/1,011.93
6. Step 6: Final answer
   x = 1,399.71