Finding the Fourth Proportional to 1,500.71, 2,070.99 and 837.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,500.71 : 2,070.99 = 837.57 : x
2. Step 2: Convert to fraction form
   1,500.71/2,070.99 = 837.57/x
3. Step 3: Cross multiply
   1,500.71x = 2,070.99 × 837.57
4. Step 4: Simplify right side
   1,500.71x = 1,734,589.72
5. Step 5: Solve for x
   x = 1,734,589.72/1,500.71
6. Step 6: Final answer
   x = 1,155.84