Finding the Fourth Proportional to 1,346.64, 1,857.72 and 953.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,346.64 : 1,857.72 = 953.88 : x
2. Step 2: Convert to fraction form
   1,346.64/1,857.72 = 953.88/x
3. Step 3: Cross multiply
   1,346.64x = 1,857.72 × 953.88
4. Step 4: Simplify right side
   1,346.64x = 1,772,041.95
5. Step 5: Solve for x
   x = 1,772,041.95/1,346.64
6. Step 6: Final answer
   x = 1,315.90