Finding the Fourth Proportional to 1,312.83, 1,968.15 and 900.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,312.83 : 1,968.15 = 900.96 : x
2. Step 2: Convert to fraction form
   1,312.83/1,968.15 = 900.96/x
3. Step 3: Cross multiply
   1,312.83x = 1,968.15 × 900.96
4. Step 4: Simplify right side
   1,312.83x = 1,773,224.42
5. Step 5: Solve for x
   x = 1,773,224.42/1,312.83
6. Step 6: Final answer
   x = 1,350.69