Finding the Fourth Proportional to 1,357.89, 1,875.21 and 1,160.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,357.89 : 1,875.21 = 1,160.25 : x
2. Step 2: Convert to fraction form
   1,357.89/1,875.21 = 1,160.25/x
3. Step 3: Cross multiply
   1,357.89x = 1,875.21 × 1,160.25
4. Step 4: Simplify right side
   1,357.89x = 2,175,712.40
5. Step 5: Solve for x
   x = 2,175,712.40/1,357.89
6. Step 6: Final answer
   x = 1,602.27