Finding the Fourth Proportional to 1,356.95, 1,861.32 and 1,345.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,356.95 : 1,861.32 = 1,345.25 : x
2. Step 2: Convert to fraction form
   1,356.95/1,861.32 = 1,345.25/x
3. Step 3: Cross multiply
   1,356.95x = 1,861.32 × 1,345.25
4. Step 4: Simplify right side
   1,356.95x = 2,503,931.42
5. Step 5: Solve for x
   x = 2,503,931.42/1,356.95
6. Step 6: Final answer
   x = 1,845.27