Finding the Fourth Proportional to 1,345.57, 2,019.63 and 954.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,345.57 : 2,019.63 = 954.46 : x
2. Step 2: Convert to fraction form
   1,345.57/2,019.63 = 954.46/x
3. Step 3: Cross multiply
   1,345.57x = 2,019.63 × 954.46
4. Step 4: Simplify right side
   1,345.57x = 1,927,656.05
5. Step 5: Solve for x
   x = 1,927,656.05/1,345.57
6. Step 6: Final answer
   x = 1,432.59