Finding the Fourth Proportional to 1,175.38, 1,621.98 and 651.40

Step by Step Solution

1. Step 1: Write the proportion equation
   1,175.38 : 1,621.98 = 651.40 : x
2. Step 2: Convert to fraction form
   1,175.38/1,621.98 = 651.40/x
3. Step 3: Cross multiply
   1,175.38x = 1,621.98 × 651.40
4. Step 4: Simplify right side
   1,175.38x = 1,056,557.77
5. Step 5: Solve for x
   x = 1,056,557.77/1,175.38
6. Step 6: Final answer
   x = 898.91