Finding the Fourth Proportional to 1,300.32, 1,948.64 and 1,115.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,300.32 : 1,948.64 = 1,115.78 : x
2. Step 2: Convert to fraction form
   1,300.32/1,948.64 = 1,115.78/x
3. Step 3: Cross multiply
   1,300.32x = 1,948.64 × 1,115.78
4. Step 4: Simplify right side
   1,300.32x = 2,174,238.22
5. Step 5: Solve for x
   x = 2,174,238.22/1,300.32
6. Step 6: Final answer
   x = 1,672.08