Finding the Fourth Proportional to 1,025,123.10, 1,537,676.55 and 266,963.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,025,123.10 : 1,537,676.55 = 266,963.10 : x
2. Step 2: Convert to fraction form
   1,025,123.10/1,537,676.55 = 266,963.10/x
3. Step 3: Cross multiply
   1,025,123.10x = 1,537,676.55 × 266,963.10
4. Step 4: Simplify right side
   1,025,123.10x = 410,502,898,585.31
5. Step 5: Solve for x
   x = 410,502,898,585.31/1,025,123.10
6. Step 6: Final answer
   x = 400,442.54