Finding the Fourth Proportional to 1,152.93, 1,590.98 and 628.97

Step by Step Solution

1. Step 1: Write the proportion equation
   1,152.93 : 1,590.98 = 628.97 : x
2. Step 2: Convert to fraction form
   1,152.93/1,590.98 = 628.97/x
3. Step 3: Cross multiply
   1,152.93x = 1,590.98 × 628.97
4. Step 4: Simplify right side
   1,152.93x = 1,000,667.59
5. Step 5: Solve for x
   x = 1,000,667.59/1,152.93
6. Step 6: Final answer
   x = 867.93