Finding the Fourth Proportional to 1,112,401.02, 1,667,611.95 and 402,271.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,112,401.02 : 1,667,611.95 = 402,271.30 : x
2. Step 2: Convert to fraction form
   1,112,401.02/1,667,611.95 = 402,271.30/x
3. Step 3: Cross multiply
   1,112,401.02x = 1,667,611.95 × 402,271.30
4. Step 4: Simplify right side
   1,112,401.02x = 670,832,427,022.04
5. Step 5: Solve for x
   x = 670,832,427,022.04/1,112,401.02
6. Step 6: Final answer
   x = 603,049.09