Finding the Fourth Proportional to 1,366.56, 1,886.40 and 901.92

Step by Step Solution

1. Step 1: Write the proportion equation
   1,366.56 : 1,886.40 = 901.92 : x
2. Step 2: Convert to fraction form
   1,366.56/1,886.40 = 901.92/x
3. Step 3: Cross multiply
   1,366.56x = 1,886.40 × 901.92
4. Step 4: Simplify right side
   1,366.56x = 1,701,381.89
5. Step 5: Solve for x
   x = 1,701,381.89/1,366.56
6. Step 6: Final answer
   x = 1,245.01