Finding the Fourth Proportional to 1,074,493.55, 1,611,185.61 and 316,236.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,074,493.55 : 1,611,185.61 = 316,236.50 : x
2. Step 2: Convert to fraction form
   1,074,493.55/1,611,185.61 = 316,236.50/x
3. Step 3: Cross multiply
   1,074,493.55x = 1,611,185.61 × 316,236.50
4. Step 4: Simplify right side
   1,074,493.55x = 509,515,703,723.34
5. Step 5: Solve for x
   x = 509,515,703,723.34/1,074,493.55
6. Step 6: Final answer
   x = 474,191.49