Finding the Fourth Proportional to 1,434,012.42, 2,151,077.98 and 423,134.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,434,012.42 : 2,151,077.98 = 423,134.37 : x
2. Step 2: Convert to fraction form
   1,434,012.42/2,151,077.98 = 423,134.37/x
3. Step 3: Cross multiply
   1,434,012.42x = 2,151,077.98 × 423,134.37
4. Step 4: Simplify right side
   1,434,012.42x = 910,195,025,888.17
5. Step 5: Solve for x
   x = 910,195,025,888.17/1,434,012.42
6. Step 6: Final answer
   x = 634,719.07