Finding the Fourth Proportional to 931,014, 1,396,602 and 257,096.16

Step by Step Solution

1. Step 1: Write the proportion equation
   931,014 : 1,396,602 = 257,096.16 : x
2. Step 2: Convert to fraction form
   931,014/1,396,602 = 257,096.16/x
3. Step 3: Cross multiply
   931,014x = 1,396,602 × 257,096.16
4. Step 4: Simplify right side
   931,014x = 359,061,011,248.32
5. Step 5: Solve for x
   x = 359,061,011,248.32/931,014
6. Step 6: Final answer
   x = 385,666.61