Finding the Fourth Proportional to 1,345.30, 1,856.58 and 756.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,345.30 : 1,856.58 = 756.02 : x
2. Step 2: Convert to fraction form
   1,345.30/1,856.58 = 756.02/x
3. Step 3: Cross multiply
   1,345.30x = 1,856.58 × 756.02
4. Step 4: Simplify right side
   1,345.30x = 1,403,611.61
5. Step 5: Solve for x
   x = 1,403,611.61/1,345.30
6. Step 6: Final answer
   x = 1,043.34