Finding the Fourth Proportional to 1,020,870.42, 1,531,188.86 and 272,974.74

Step by Step Solution

1. Step 1: Write the proportion equation
   1,020,870.42 : 1,531,188.86 = 272,974.74 : x
2. Step 2: Convert to fraction form
   1,020,870.42/1,531,188.86 = 272,974.74/x
3. Step 3: Cross multiply
   1,020,870.42x = 1,531,188.86 × 272,974.74
4. Step 4: Simplify right side
   1,020,870.42x = 417,975,880,949.40
5. Step 5: Solve for x
   x = 417,975,880,949.40/1,020,870.42
6. Step 6: Final answer
   x = 409,430.89