Finding the Fourth Proportional to 1,300.93, 1,941.87 and 1,128.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,300.93 : 1,941.87 = 1,128.79 : x
2. Step 2: Convert to fraction form
   1,300.93/1,941.87 = 1,128.79/x
3. Step 3: Cross multiply
   1,300.93x = 1,941.87 × 1,128.79
4. Step 4: Simplify right side
   1,300.93x = 2,191,960.62
5. Step 5: Solve for x
   x = 2,191,960.62/1,300.93
6. Step 6: Final answer
   x = 1,684.92