Finding the Fourth Proportional to 1,675.89, 2,312.96 and 1,152.63

Step by Step Solution

1. Step 1: Write the proportion equation
   1,675.89 : 2,312.96 = 1,152.63 : x
2. Step 2: Convert to fraction form
   1,675.89/2,312.96 = 1,152.63/x
3. Step 3: Cross multiply
   1,675.89x = 2,312.96 × 1,152.63
4. Step 4: Simplify right side
   1,675.89x = 2,665,981.32
5. Step 5: Solve for x
   x = 2,665,981.32/1,675.89
6. Step 6: Final answer
   x = 1,590.79