Finding the Fourth Proportional to 1,500.78, 2,070.86 and 837.58

Step by Step Solution

1. Step 1: Write the proportion equation
   1,500.78 : 2,070.86 = 837.58 : x
2. Step 2: Convert to fraction form
   1,500.78/2,070.86 = 837.58/x
3. Step 3: Cross multiply
   1,500.78x = 2,070.86 × 837.58
4. Step 4: Simplify right side
   1,500.78x = 1,734,510.92
5. Step 5: Solve for x
   x = 1,734,510.92/1,500.78
6. Step 6: Final answer
   x = 1,155.74