Finding the Fourth Proportional to 1,312.46, 1,969.59 and 901.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,312.46 : 1,969.59 = 901.98 : x
2. Step 2: Convert to fraction form
   1,312.46/1,969.59 = 901.98/x
3. Step 3: Cross multiply
   1,312.46x = 1,969.59 × 901.98
4. Step 4: Simplify right side
   1,312.46x = 1,776,530.79
5. Step 5: Solve for x
   x = 1,776,530.79/1,312.46
6. Step 6: Final answer
   x = 1,353.59