Finding the Fourth Proportional to 1,545.17, 2,131.72 and 954.68

Step by Step Solution

1. Step 1: Write the proportion equation
   1,545.17 : 2,131.72 = 954.68 : x
2. Step 2: Convert to fraction form
   1,545.17/2,131.72 = 954.68/x
3. Step 3: Cross multiply
   1,545.17x = 2,131.72 × 954.68
4. Step 4: Simplify right side
   1,545.17x = 2,035,095.02
5. Step 5: Solve for x
   x = 2,035,095.02/1,545.17
6. Step 6: Final answer
   x = 1,317.07