Finding the Fourth Proportional to 1,345.02, 1,856.25 and 785.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,345.02 : 1,856.25 = 785.76 : x
2. Step 2: Convert to fraction form
   1,345.02/1,856.25 = 785.76/x
3. Step 3: Cross multiply
   1,345.02x = 1,856.25 × 785.76
4. Step 4: Simplify right side
   1,345.02x = 1,458,567
5. Step 5: Solve for x
   x = 1,458,567/1,345.02
6. Step 6: Final answer
   x = 1,084.42